/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:39:30,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:39:30,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:39:30,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:39:30,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:39:30,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:39:30,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:39:30,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:39:30,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:39:30,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:39:30,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:39:30,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:39:30,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:39:30,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:39:30,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:39:30,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:39:30,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:39:30,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:39:30,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:39:30,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:39:30,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:39:30,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:39:30,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:39:30,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:39:30,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:39:30,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:39:30,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:39:30,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:39:30,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:39:30,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:39:30,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:39:30,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:39:30,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:39:30,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:39:30,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:39:30,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:39:30,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:39:30,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:39:30,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:39:30,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:39:30,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:39:30,755 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 [2020-08-27 21:39:30,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:39:30,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:39:30,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:39:30,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:39:30,805 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:39:30,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:39:30,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:39:30,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:39:30,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:39:30,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:39:30,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:39:30,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:39:30,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:39:30,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:39:30,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:39:30,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:39:30,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:39:30,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:39:30,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:39:30,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:39:30,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:39:30,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:39:30,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:39:30,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:39:30,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:39:30,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:39:30,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:39:30,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:39:30,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:39:30,812 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 -> false [2020-08-27 21:39:31,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:39:31,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:39:31,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:39:31,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:39:31,263 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:39:31,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2020-08-27 21:39:31,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542ac586a/667716b4d2be40cb8f2253626b2f8b3a/FLAGe809fa829 [2020-08-27 21:39:31,963 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:39:31,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product07.cil.c [2020-08-27 21:39:31,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542ac586a/667716b4d2be40cb8f2253626b2f8b3a/FLAGe809fa829 [2020-08-27 21:39:32,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/542ac586a/667716b4d2be40cb8f2253626b2f8b3a [2020-08-27 21:39:32,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:39:32,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:39:32,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:39:32,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:39:32,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:39:32,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:32,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32, skipping insertion in model container [2020-08-27 21:39:32,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:32,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:39:32,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:39:32,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:39:32,711 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:39:32,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:39:32,941 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:39:32,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32 WrapperNode [2020-08-27 21:39:32,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:39:32,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:39:32,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:39:32,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:39:32,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:32,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:32,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:32,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:33,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:33,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:33,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (1/1) ... [2020-08-27 21:39:33,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:39:33,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:39:33,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:39:33,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:39:33,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (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 [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:39:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:39:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:39:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:39:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:39:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:39:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:39:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:39:33,123 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:39:33,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:39:33,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:39:33,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:39:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:39:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:39:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:39:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:39:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:39:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:39:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:39:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:39:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:39:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:39:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:39:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:39:33,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:39:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:39:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:39:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:39:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:39:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:39:33,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:39:34,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:39:34,267 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:39:34,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:39:34 BoogieIcfgContainer [2020-08-27 21:39:34,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:39:34,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:39:34,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:39:34,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:39:34,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:39:32" (1/3) ... [2020-08-27 21:39:34,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155fd645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:39:34, skipping insertion in model container [2020-08-27 21:39:34,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:32" (2/3) ... [2020-08-27 21:39:34,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155fd645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:39:34, skipping insertion in model container [2020-08-27 21:39:34,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:39:34" (3/3) ... [2020-08-27 21:39:34,282 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product07.cil.c [2020-08-27 21:39:34,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:39:34,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:39:34,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:39:34,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:39:34,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:39:34,361 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:39:34,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:39:34,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:39:34,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:39:34,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:39:34,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:39:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-27 21:39:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:39:34,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:34,398 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] [2020-08-27 21:39:34,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:34,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1908164491, now seen corresponding path program 1 times [2020-08-27 21:39:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547124544] [2020-08-27 21:39:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,127 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:39:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:39:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:35,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547124544] [2020-08-27 21:39:35,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:35,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:39:35,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184502325] [2020-08-27 21:39:35,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:39:35,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:35,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:39:35,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:39:35,300 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-27 21:39:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:36,376 INFO L93 Difference]: Finished difference Result 257 states and 340 transitions. [2020-08-27 21:39:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:39:36,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:39:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:36,401 INFO L225 Difference]: With dead ends: 257 [2020-08-27 21:39:36,401 INFO L226 Difference]: Without dead ends: 140 [2020-08-27 21:39:36,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:39:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-27 21:39:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 108. [2020-08-27 21:39:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-27 21:39:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2020-08-27 21:39:36,516 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 46 [2020-08-27 21:39:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:36,517 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2020-08-27 21:39:36,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:39:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2020-08-27 21:39:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:39:36,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:36,521 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] [2020-08-27 21:39:36,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:39:36,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1100286526, now seen corresponding path program 1 times [2020-08-27 21:39:36,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:36,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616268412] [2020-08-27 21:39:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:36,960 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:36,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:39:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:37,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616268412] [2020-08-27 21:39:37,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:37,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:39:37,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648385018] [2020-08-27 21:39:37,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:39:37,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:39:37,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:39:37,040 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand 4 states. [2020-08-27 21:39:37,542 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:38,285 INFO L93 Difference]: Finished difference Result 184 states and 223 transitions. [2020-08-27 21:39:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:39:38,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:39:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:38,290 INFO L225 Difference]: With dead ends: 184 [2020-08-27 21:39:38,290 INFO L226 Difference]: Without dead ends: 124 [2020-08-27 21:39:38,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:39:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-27 21:39:38,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2020-08-27 21:39:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-27 21:39:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-08-27 21:39:38,325 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 47 [2020-08-27 21:39:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:38,325 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-08-27 21:39:38,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:39:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-08-27 21:39:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:39:38,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:38,328 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] [2020-08-27 21:39:38,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:39:38,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash 418725032, now seen corresponding path program 1 times [2020-08-27 21:39:38,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:38,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447744681] [2020-08-27 21:39:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,746 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:39:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:39:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:38,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447744681] [2020-08-27 21:39:38,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:38,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:39:38,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383579909] [2020-08-27 21:39:38,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:39:38,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:39:38,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:39:38,917 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 8 states. [2020-08-27 21:39:39,340 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:39,650 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:39,916 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:40,182 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:41,016 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:42,491 INFO L93 Difference]: Finished difference Result 345 states and 428 transitions. [2020-08-27 21:39:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:39:42,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-27 21:39:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:42,496 INFO L225 Difference]: With dead ends: 345 [2020-08-27 21:39:42,496 INFO L226 Difference]: Without dead ends: 270 [2020-08-27 21:39:42,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:39:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-27 21:39:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 216. [2020-08-27 21:39:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-27 21:39:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2020-08-27 21:39:42,566 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 51 [2020-08-27 21:39:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:42,567 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2020-08-27 21:39:42,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:39:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2020-08-27 21:39:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:39:42,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:42,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:42,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:39:42,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:42,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:42,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2030555279, now seen corresponding path program 1 times [2020-08-27 21:39:42,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:42,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190934944] [2020-08-27 21:39:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:42,995 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:39:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:39:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:43,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190934944] [2020-08-27 21:39:43,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:43,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:39:43,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294306004] [2020-08-27 21:39:43,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:39:43,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:39:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:39:43,135 INFO L87 Difference]: Start difference. First operand 216 states and 260 transitions. Second operand 12 states. [2020-08-27 21:39:43,740 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:44,116 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:44,409 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:44,701 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:45,341 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:39:46,297 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:46,729 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:47,079 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:47,372 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:39:47,674 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:48,051 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:48,431 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:39:48,758 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:39:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:50,120 INFO L93 Difference]: Finished difference Result 855 states and 1150 transitions. [2020-08-27 21:39:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:39:50,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-27 21:39:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:50,129 INFO L225 Difference]: With dead ends: 855 [2020-08-27 21:39:50,129 INFO L226 Difference]: Without dead ends: 663 [2020-08-27 21:39:50,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:39:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-27 21:39:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 570. [2020-08-27 21:39:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-08-27 21:39:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 706 transitions. [2020-08-27 21:39:50,269 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 706 transitions. Word has length 57 [2020-08-27 21:39:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:50,269 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 706 transitions. [2020-08-27 21:39:50,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:39:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 706 transitions. [2020-08-27 21:39:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-27 21:39:50,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:50,274 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] [2020-08-27 21:39:50,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:39:50,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1547213643, now seen corresponding path program 1 times [2020-08-27 21:39:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:50,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93291608] [2020-08-27 21:39:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,576 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:39:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:39:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:39:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:39:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:39:50,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93291608] [2020-08-27 21:39:50,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:39:50,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:39:50,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806504480] [2020-08-27 21:39:50,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:39:50,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:50,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:39:50,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:39:50,670 INFO L87 Difference]: Start difference. First operand 570 states and 706 transitions. Second operand 6 states. [2020-08-27 21:39:51,046 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:51,857 INFO L93 Difference]: Finished difference Result 961 states and 1237 transitions. [2020-08-27 21:39:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:39:51,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-27 21:39:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:51,862 INFO L225 Difference]: With dead ends: 961 [2020-08-27 21:39:51,862 INFO L226 Difference]: Without dead ends: 415 [2020-08-27 21:39:51,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:39:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-27 21:39:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 390. [2020-08-27 21:39:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-08-27 21:39:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 449 transitions. [2020-08-27 21:39:51,927 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 449 transitions. Word has length 61 [2020-08-27 21:39:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:51,927 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 449 transitions. [2020-08-27 21:39:51,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:39:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 449 transitions. [2020-08-27 21:39:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:39:51,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:39:51,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:39:51,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:39:51,931 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:39:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:39:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1956269670, now seen corresponding path program 1 times [2020-08-27 21:39:51,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:39:51,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474897664] [2020-08-27 21:39:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:39:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,302 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:39:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:39:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:39:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:39:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:39:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:39:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:39:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:39:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:39:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:39:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:39:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:39:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:39:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:39:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:39:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 21:39:52,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474897664] [2020-08-27 21:39:52,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:39:52,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:39:52,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706595118] [2020-08-27 21:39:52,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:39:52,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:39:52,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:39:52,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:39:52,505 INFO L87 Difference]: Start difference. First operand 390 states and 449 transitions. Second operand 10 states. [2020-08-27 21:39:53,302 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-27 21:39:53,969 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:39:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:39:54,974 INFO L93 Difference]: Finished difference Result 522 states and 614 transitions. [2020-08-27 21:39:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:39:54,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-27 21:39:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:39:54,976 INFO L225 Difference]: With dead ends: 522 [2020-08-27 21:39:54,977 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 21:39:54,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:39:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 21:39:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 21:39:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 21:39:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 21:39:54,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2020-08-27 21:39:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:39:54,980 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 21:39:54,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:39:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 21:39:54,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 21:39:54,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:39:54,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 21:39:55,378 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:39:55,546 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:55,937 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:39:56,116 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:56,482 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:39:56,850 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:39:57,007 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:57,363 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:39:57,529 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:57,692 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:57,850 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:39:58,209 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:39:58,570 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:39:58,925 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:39:59,220 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-27 21:39:59,560 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-27 21:40:00,162 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2020-08-27 21:40:00,414 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-27 21:40:00,909 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 224 [2020-08-27 21:40:01,408 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 224 [2020-08-27 21:40:01,991 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 223 [2020-08-27 21:40:02,466 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 234 [2020-08-27 21:40:03,078 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 232 [2020-08-27 21:40:03,432 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:03,785 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:03,924 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:40:04,082 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:04,432 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:04,784 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:05,138 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:05,301 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:05,458 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:40:05,621 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:40:05,780 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:06,133 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:06,294 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:06,642 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:07,002 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:07,355 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:07,726 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:07,892 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:08,053 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:08,405 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:08,751 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:09,104 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:09,457 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:09,614 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:40:09,965 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:10,286 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 189 [2020-08-27 21:40:10,630 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:10,981 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:11,333 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:11,684 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:12,007 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-27 21:40:12,314 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-27 21:40:12,662 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:13,018 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:13,371 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:13,525 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:40:13,683 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:13,845 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:14,293 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 234 [2020-08-27 21:40:14,639 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-08-27 21:40:14,992 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-08-27 21:40:15,345 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:15,500 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:40:15,657 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:15,815 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:40:16,183 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:16,569 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:17,021 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 234 [2020-08-27 21:40:17,401 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:17,668 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2020-08-27 21:40:17,938 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-27 21:40:18,501 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2020-08-27 21:40:18,767 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-27 21:40:19,339 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 222 [2020-08-27 21:40:19,855 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2020-08-27 21:40:20,417 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 224 [2020-08-27 21:40:20,913 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 234 [2020-08-27 21:40:21,278 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-27 21:40:21,630 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-08-27 21:40:22,005 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-08-27 21:40:22,458 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2020-08-27 21:40:22,758 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-27 21:40:23,217 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2020-08-27 21:40:23,670 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 223 [2020-08-27 21:40:23,965 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-27 21:40:24,776 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-08-27 21:40:25,317 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:26,168 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 18 [2020-08-27 21:40:26,382 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-08-27 21:40:26,510 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-08-27 21:40:27,299 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 22 [2020-08-27 21:40:27,450 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 22 [2020-08-27 21:40:27,597 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 22 [2020-08-27 21:40:28,157 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:28,699 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:28,960 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:40:29,169 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-27 21:40:30,058 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 19 [2020-08-27 21:40:30,236 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-08-27 21:40:30,913 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 18 [2020-08-27 21:40:31,041 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-08-27 21:40:31,887 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 17 [2020-08-27 21:40:32,088 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-27 21:40:32,231 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 22 [2020-08-27 21:40:32,390 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-27 21:40:32,942 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:33,535 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:33,687 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 22 [2020-08-27 21:40:34,291 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2020-08-27 21:40:34,932 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-27 21:40:35,148 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 22 [2020-08-27 21:40:35,690 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 24 [2020-08-27 21:40:35,792 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-08-27 21:40:36,325 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 24