/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:41:40,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:41:40,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:41:40,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:41:40,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:41:40,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:41:40,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:41:40,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:41:40,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:41:40,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:41:40,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:41:40,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:41:40,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:41:40,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:41:40,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:41:40,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:41:40,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:41:40,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:41:40,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:41:40,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:41:40,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:41:40,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:41:40,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:41:40,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:41:40,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:41:40,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:41:40,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:41:40,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:41:40,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:41:40,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:41:40,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:41:40,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:41:40,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:41:40,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:41:40,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:41:40,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:41:40,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:41:40,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:41:40,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:41:40,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:41:40,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:41:40,631 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 [2020-08-19 02:41:40,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:41:40,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:41:40,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:41:40,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:41:40,662 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:41:40,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:41:40,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:41:40,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:41:40,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:41:40,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:41:40,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:41:40,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:41:40,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:41:40,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:41:40,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:41:40,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:41:40,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:41:40,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:41:40,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:41:40,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:41:40,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:41:40,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:41:40,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:41:40,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:41:40,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:41:40,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:41:40,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:41:40,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:41:40,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:41:40,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:41:40,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:41:40,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:41:40,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:41:40,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:41:40,996 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:41:40,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 02:41:41,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69f0748e/7660db4cddc740d396f0b8c1a848ae3a/FLAG9ba13440e [2020-08-19 02:41:41,606 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:41:41,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-19 02:41:41,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69f0748e/7660db4cddc740d396f0b8c1a848ae3a/FLAG9ba13440e [2020-08-19 02:41:41,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69f0748e/7660db4cddc740d396f0b8c1a848ae3a [2020-08-19 02:41:41,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:41:41,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:41:41,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:41:41,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:41:41,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:41:41,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:41:41" (1/1) ... [2020-08-19 02:41:41,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db8139c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:41, skipping insertion in model container [2020-08-19 02:41:41,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:41:41" (1/1) ... [2020-08-19 02:41:41,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:41:42,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:41:42,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:41:42,471 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:41:42,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:41:42,592 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:41:42,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42 WrapperNode [2020-08-19 02:41:42,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:41:42,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:41:42,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:41:42,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:41:42,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (1/1) ... [2020-08-19 02:41:42,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:41:42,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:41:42,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:41:42,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:41:42,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (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 [2020-08-19 02:41:42,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:41:42,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:41:42,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:41:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:41:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:41:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:41:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:41:42,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:41:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:41:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:41:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:41:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:41:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:41:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:41:42,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:41:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:41:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:41:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:41:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:41:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:41:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:41:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:41:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:41:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:41:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:41:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:41:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:41:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:41:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:41:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:41:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:41:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:41:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:41:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:41:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:41:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:41:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:41:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:41:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:41:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:41:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:41:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:41:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:41:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:41:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:41:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:41:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:41:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:41:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:41:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:41:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:41:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:41:44,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:41:44,135 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:41:44,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:41:44 BoogieIcfgContainer [2020-08-19 02:41:44,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:41:44,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:41:44,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:41:44,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:41:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:41:41" (1/3) ... [2020-08-19 02:41:44,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6d1b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:41:44, skipping insertion in model container [2020-08-19 02:41:44,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:42" (2/3) ... [2020-08-19 02:41:44,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6d1b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:41:44, skipping insertion in model container [2020-08-19 02:41:44,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:41:44" (3/3) ... [2020-08-19 02:41:44,149 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2020-08-19 02:41:44,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:41:44,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:41:44,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:41:44,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:41:44,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:41:44,208 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:41:44,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:41:44,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:41:44,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:41:44,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:41:44,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:41:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-19 02:41:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:41:44,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:44,269 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:44,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:44,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2020-08-19 02:41:44,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:44,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414408495] [2020-08-19 02:41:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,962 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:41:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:41:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:45,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414408495] [2020-08-19 02:41:45,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:45,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:41:45,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275127569] [2020-08-19 02:41:45,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:41:45,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:45,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:41:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:41:45,099 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 4 states. [2020-08-19 02:41:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:46,453 INFO L93 Difference]: Finished difference Result 366 states and 469 transitions. [2020-08-19 02:41:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:41:46,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 02:41:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:46,476 INFO L225 Difference]: With dead ends: 366 [2020-08-19 02:41:46,476 INFO L226 Difference]: Without dead ends: 201 [2020-08-19 02:41:46,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:41:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-19 02:41:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2020-08-19 02:41:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-19 02:41:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2020-08-19 02:41:46,608 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2020-08-19 02:41:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:46,609 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2020-08-19 02:41:46,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:41:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2020-08-19 02:41:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:41:46,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:46,614 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:46,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:41:46,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:46,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2020-08-19 02:41:46,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:46,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396506984] [2020-08-19 02:41:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:46,968 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:41:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:41:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:41:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:47,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396506984] [2020-08-19 02:41:47,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:47,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:41:47,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882246559] [2020-08-19 02:41:47,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:41:47,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:47,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:41:47,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:41:47,029 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 5 states. [2020-08-19 02:41:47,534 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:48,594 INFO L93 Difference]: Finished difference Result 301 states and 369 transitions. [2020-08-19 02:41:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:41:48,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 02:41:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:48,601 INFO L225 Difference]: With dead ends: 301 [2020-08-19 02:41:48,602 INFO L226 Difference]: Without dead ends: 191 [2020-08-19 02:41:48,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:41:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-19 02:41:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-08-19 02:41:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 02:41:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2020-08-19 02:41:48,646 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2020-08-19 02:41:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:48,647 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2020-08-19 02:41:48,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:41:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2020-08-19 02:41:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 02:41:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:48,649 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:48,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:41:48,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2020-08-19 02:41:48,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:48,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600850432] [2020-08-19 02:41:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:48,967 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:41:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:41:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:49,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600850432] [2020-08-19 02:41:49,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:49,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:49,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697109915] [2020-08-19 02:41:49,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:49,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:49,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:49,064 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 9 states. [2020-08-19 02:41:49,487 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:49,789 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:50,041 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:50,305 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:51,189 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:53,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:53,350 INFO L93 Difference]: Finished difference Result 524 states and 649 transitions. [2020-08-19 02:41:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:41:53,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 02:41:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:53,357 INFO L225 Difference]: With dead ends: 524 [2020-08-19 02:41:53,357 INFO L226 Difference]: Without dead ends: 395 [2020-08-19 02:41:53,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-19 02:41:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 330. [2020-08-19 02:41:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-08-19 02:41:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2020-08-19 02:41:53,438 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2020-08-19 02:41:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:53,438 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2020-08-19 02:41:53,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2020-08-19 02:41:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:41:53,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:53,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:53,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:41:53,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2020-08-19 02:41:53,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:53,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161953766] [2020-08-19 02:41:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,746 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:53,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:41:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:41:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:41:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:41:53,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161953766] [2020-08-19 02:41:53,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:53,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:53,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421997596] [2020-08-19 02:41:53,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:53,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:53,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:53,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:53,916 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 9 states. [2020-08-19 02:41:54,290 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:54,957 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:55,827 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:56,134 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:56,390 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:56,656 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:57,676 INFO L93 Difference]: Finished difference Result 843 states and 1098 transitions. [2020-08-19 02:41:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:41:57,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 02:41:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:57,682 INFO L225 Difference]: With dead ends: 843 [2020-08-19 02:41:57,682 INFO L226 Difference]: Without dead ends: 541 [2020-08-19 02:41:57,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:41:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-19 02:41:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 473. [2020-08-19 02:41:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-08-19 02:41:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 569 transitions. [2020-08-19 02:41:57,787 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 569 transitions. Word has length 70 [2020-08-19 02:41:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:57,788 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 569 transitions. [2020-08-19 02:41:57,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 569 transitions. [2020-08-19 02:41:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 02:41:57,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:57,791 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:57,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:41:57,791 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2020-08-19 02:41:57,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:57,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477735341] [2020-08-19 02:41:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,068 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:41:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:41:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:41:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:41:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:58,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477735341] [2020-08-19 02:41:58,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:58,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:58,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850826697] [2020-08-19 02:41:58,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:58,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:58,206 INFO L87 Difference]: Start difference. First operand 473 states and 569 transitions. Second operand 9 states. [2020-08-19 02:41:59,327 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:59,551 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:59,797 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:00,048 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:01,004 INFO L93 Difference]: Finished difference Result 1007 states and 1277 transitions. [2020-08-19 02:42:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:42:01,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-19 02:42:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:01,014 INFO L225 Difference]: With dead ends: 1007 [2020-08-19 02:42:01,014 INFO L226 Difference]: Without dead ends: 562 [2020-08-19 02:42:01,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:42:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-19 02:42:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 486. [2020-08-19 02:42:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-19 02:42:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-19 02:42:01,099 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2020-08-19 02:42:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:01,099 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-19 02:42:01,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:42:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-19 02:42:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 02:42:01,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:01,102 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:01,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:42:01,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:01,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2020-08-19 02:42:01,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:01,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979588356] [2020-08-19 02:42:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,427 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:42:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:42:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:42:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:42:01,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979588356] [2020-08-19 02:42:01,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:42:01,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:42:01,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256066563] [2020-08-19 02:42:01,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:42:01,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:42:01,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:42:01,565 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 11 states. [2020-08-19 02:42:02,092 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:02,326 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:02,554 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:03,361 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:03,633 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:03,898 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:04,963 INFO L93 Difference]: Finished difference Result 1034 states and 1330 transitions. [2020-08-19 02:42:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:42:04,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-19 02:42:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:04,974 INFO L225 Difference]: With dead ends: 1034 [2020-08-19 02:42:04,974 INFO L226 Difference]: Without dead ends: 576 [2020-08-19 02:42:04,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:42:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-19 02:42:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 494. [2020-08-19 02:42:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-19 02:42:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2020-08-19 02:42:05,099 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2020-08-19 02:42:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:05,103 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2020-08-19 02:42:05,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:42:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2020-08-19 02:42:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 02:42:05,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:05,108 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:05,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:42:05,110 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2020-08-19 02:42:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:05,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420318430] [2020-08-19 02:42:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,410 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:42:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:42:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:42:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:42:05,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420318430] [2020-08-19 02:42:05,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:42:05,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:42:05,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482106385] [2020-08-19 02:42:05,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:42:05,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:05,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:42:05,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:42:05,619 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 7 states. [2020-08-19 02:42:05,941 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:06,445 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:08,749 INFO L93 Difference]: Finished difference Result 1535 states and 1984 transitions. [2020-08-19 02:42:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:42:08,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-19 02:42:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:08,757 INFO L225 Difference]: With dead ends: 1535 [2020-08-19 02:42:08,758 INFO L226 Difference]: Without dead ends: 1069 [2020-08-19 02:42:08,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:42:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-08-19 02:42:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 991. [2020-08-19 02:42:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-08-19 02:42:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1203 transitions. [2020-08-19 02:42:08,929 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1203 transitions. Word has length 98 [2020-08-19 02:42:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:08,929 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1203 transitions. [2020-08-19 02:42:08,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:42:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1203 transitions. [2020-08-19 02:42:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 02:42:08,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:08,933 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:08,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:42:08,934 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:08,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2020-08-19 02:42:08,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:08,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108298320] [2020-08-19 02:42:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,290 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:42:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 02:42:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:42:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:42:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:42:09,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108298320] [2020-08-19 02:42:09,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:42:09,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:42:09,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053789886] [2020-08-19 02:42:09,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:42:09,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:42:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:42:09,497 INFO L87 Difference]: Start difference. First operand 991 states and 1203 transitions. Second operand 12 states. [2020-08-19 02:42:10,065 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:10,732 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:11,411 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:11,748 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:12,020 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:12,315 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:12,567 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:14,564 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:14,868 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:15,459 INFO L93 Difference]: Finished difference Result 2813 states and 3636 transitions. [2020-08-19 02:42:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:42:15,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-19 02:42:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:15,473 INFO L225 Difference]: With dead ends: 2813 [2020-08-19 02:42:15,473 INFO L226 Difference]: Without dead ends: 2052 [2020-08-19 02:42:15,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:42:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-08-19 02:42:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1740. [2020-08-19 02:42:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-08-19 02:42:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2094 transitions. [2020-08-19 02:42:15,893 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2094 transitions. Word has length 102 [2020-08-19 02:42:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:15,897 INFO L479 AbstractCegarLoop]: Abstraction has 1740 states and 2094 transitions. [2020-08-19 02:42:15,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:42:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2094 transitions. [2020-08-19 02:42:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-19 02:42:15,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:15,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:15,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:42:15,909 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2020-08-19 02:42:15,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:15,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84984214] [2020-08-19 02:42:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,318 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:42:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:42:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:42:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:42:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 02:42:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:42:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 02:42:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-19 02:42:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 02:42:16,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84984214] [2020-08-19 02:42:16,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:16,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:42:16,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901794896] [2020-08-19 02:42:16,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:42:16,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:16,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:42:16,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:42:16,700 INFO L87 Difference]: Start difference. First operand 1740 states and 2094 transitions. Second operand 16 states. [2020-08-19 02:42:17,292 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:17,617 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:17,873 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:18,121 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:18,826 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:19,122 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:19,462 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:19,752 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:20,873 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:21,573 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:21,868 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:22,200 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:22,764 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:23,189 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:23,997 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:24,271 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:24,870 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:25,643 INFO L93 Difference]: Finished difference Result 3741 states and 4632 transitions. [2020-08-19 02:42:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 02:42:25,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-19 02:42:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:25,657 INFO L225 Difference]: With dead ends: 3741 [2020-08-19 02:42:25,657 INFO L226 Difference]: Without dead ends: 2219 [2020-08-19 02:42:25,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 02:42:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-08-19 02:42:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2027. [2020-08-19 02:42:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-08-19 02:42:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2384 transitions. [2020-08-19 02:42:26,162 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2384 transitions. Word has length 180 [2020-08-19 02:42:26,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:26,163 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2384 transitions. [2020-08-19 02:42:26,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:42:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2384 transitions. [2020-08-19 02:42:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-19 02:42:26,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:26,175 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:26,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:42:26,175 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:26,176 INFO L82 PathProgramCache]: Analyzing trace with hash -489961037, now seen corresponding path program 1 times [2020-08-19 02:42:26,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:26,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070101811] [2020-08-19 02:42:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,582 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:42:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:42:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 02:42:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:42:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:42:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 02:42:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:42:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:42:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-19 02:42:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-19 02:42:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-19 02:42:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-19 02:42:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 02:42:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-19 02:42:27,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070101811] [2020-08-19 02:42:27,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:27,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 02:42:27,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089584207] [2020-08-19 02:42:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 02:42:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 02:42:27,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:42:27,346 INFO L87 Difference]: Start difference. First operand 2027 states and 2384 transitions. Second operand 15 states. [2020-08-19 02:42:28,917 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:29,244 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:29,497 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:29,734 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:30,716 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:32,699 INFO L93 Difference]: Finished difference Result 5499 states and 6729 transitions. [2020-08-19 02:42:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:42:32,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-19 02:42:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:32,718 INFO L225 Difference]: With dead ends: 5499 [2020-08-19 02:42:32,718 INFO L226 Difference]: Without dead ends: 3170 [2020-08-19 02:42:32,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 02:42:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-08-19 02:42:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2752. [2020-08-19 02:42:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-08-19 02:42:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3317 transitions. [2020-08-19 02:42:33,295 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3317 transitions. Word has length 305 [2020-08-19 02:42:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:33,296 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3317 transitions. [2020-08-19 02:42:33,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 02:42:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3317 transitions. [2020-08-19 02:42:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 02:42:33,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:33,307 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:33,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:42:33,308 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1453218862, now seen corresponding path program 1 times [2020-08-19 02:42:33,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:33,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375552038] [2020-08-19 02:42:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,706 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:33,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:42:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:42:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 02:42:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:42:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:42:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:42:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-19 02:42:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:42:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:42:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 02:42:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 02:42:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-19 02:42:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 02:42:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 02:42:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 91 proven. 42 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-08-19 02:42:34,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375552038] [2020-08-19 02:42:34,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:34,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:42:34,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292249482] [2020-08-19 02:42:34,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:42:34,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:42:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:42:34,158 INFO L87 Difference]: Start difference. First operand 2752 states and 3317 transitions. Second operand 16 states. [2020-08-19 02:42:34,771 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:35,108 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:35,377 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:35,634 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:36,369 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:37,494 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:37,791 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:38,031 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:38,550 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191