/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:24:46,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:24:46,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:24:46,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:24:46,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:24:46,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:24:46,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:24:46,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:24:46,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:24:46,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:24:46,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:24:46,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:24:46,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:24:46,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:24:46,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:24:46,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:24:46,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:24:46,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:24:46,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:24:46,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:24:46,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:24:46,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:24:46,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:24:46,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:24:46,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:24:46,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:24:46,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:24:46,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:24:46,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:24:46,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:24:46,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:24:46,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:24:46,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:24:46,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:24:46,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:24:46,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:24:46,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:24:46,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:24:46,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:24:46,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:24:46,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:24:46,734 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 [2020-08-21 16:24:46,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:24:46,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:24:46,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:24:46,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:24:46,780 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:24:46,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:24:46,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:24:46,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:24:46,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:24:46,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:24:46,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:24:46,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:24:46,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:24:46,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:24:46,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:24:46,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:24:46,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:24:46,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:24:46,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:24:46,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:24:46,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:24:46,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:24:46,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:24:46,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:24:46,789 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:24:47,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:24:47,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:24:47,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:24:47,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:24:47,099 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:24:47,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-21 16:24:47,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1051e582b/d6c9bcefa0754346b58b1362840d983f/FLAGee9fb5b25 [2020-08-21 16:24:47,753 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:24:47,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-21 16:24:47,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1051e582b/d6c9bcefa0754346b58b1362840d983f/FLAGee9fb5b25 [2020-08-21 16:24:48,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1051e582b/d6c9bcefa0754346b58b1362840d983f [2020-08-21 16:24:48,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:24:48,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:24:48,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:48,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:24:48,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:24:48,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbadd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48, skipping insertion in model container [2020-08-21 16:24:48,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:24:48,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:24:48,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:48,597 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:24:48,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:48,745 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:24:48,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48 WrapperNode [2020-08-21 16:24:48,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:48,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:24:48,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:24:48,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:24:48,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (1/1) ... [2020-08-21 16:24:48,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:24:48,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:24:48,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:24:48,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:24:48,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (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 [2020-08-21 16:24:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:24:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:24:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:24:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:24:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:24:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:24:48,900 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:24:48,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:24:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:24:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:24:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:24:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:24:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:24:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:24:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:24:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:24:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:24:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:24:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:24:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:24:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:24:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:24:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:24:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:24:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:24:49,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:24:49,996 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:24:50,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:50 BoogieIcfgContainer [2020-08-21 16:24:50,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:24:50,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:24:50,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:24:50,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:24:50,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:24:48" (1/3) ... [2020-08-21 16:24:50,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3202f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:50, skipping insertion in model container [2020-08-21 16:24:50,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:48" (2/3) ... [2020-08-21 16:24:50,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3202f8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:50, skipping insertion in model container [2020-08-21 16:24:50,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:50" (3/3) ... [2020-08-21 16:24:50,010 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-21 16:24:50,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:24:50,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:24:50,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:24:50,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:24:50,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:24:50,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:24:50,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:24:50,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:24:50,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:24:50,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:24:50,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:24:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-21 16:24:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:24:50,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:50,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:50,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-21 16:24:50,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:50,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264804575] [2020-08-21 16:24:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,776 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:24:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:50,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264804575] [2020-08-21 16:24:50,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:50,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:24:50,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962803798] [2020-08-21 16:24:50,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:24:50,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:50,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:24:50,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:50,916 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-21 16:24:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:52,035 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-21 16:24:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:24:52,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:24:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:52,055 INFO L225 Difference]: With dead ends: 297 [2020-08-21 16:24:52,055 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 16:24:52,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 16:24:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 16:24:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 16:24:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-21 16:24:52,153 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-21 16:24:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:52,154 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-21 16:24:52,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:24:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-21 16:24:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:24:52,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:52,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:52,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:24:52,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:52,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-21 16:24:52,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:52,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580076589] [2020-08-21 16:24:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,494 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:24:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:24:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:52,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580076589] [2020-08-21 16:24:52,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:52,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:24:52,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892121024] [2020-08-21 16:24:52,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:24:52,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:24:52,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:24:52,537 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-21 16:24:52,943 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:53,773 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-21 16:24:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:24:53,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:24:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:53,778 INFO L225 Difference]: With dead ends: 230 [2020-08-21 16:24:53,778 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 16:24:53,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:24:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 16:24:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 16:24:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 16:24:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-21 16:24:53,818 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-21 16:24:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:53,819 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-21 16:24:53,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:24:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-21 16:24:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:24:53,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:53,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:53,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:24:53,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-21 16:24:53,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:53,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601986784] [2020-08-21 16:24:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,130 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:24:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:24:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:54,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601986784] [2020-08-21 16:24:54,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:54,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:24:54,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647156955] [2020-08-21 16:24:54,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:24:54,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:54,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:24:54,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:24:54,231 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-21 16:24:54,636 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:54,947 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:55,202 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:55,426 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:56,489 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-21 16:24:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:24:56,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:24:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:56,493 INFO L225 Difference]: With dead ends: 239 [2020-08-21 16:24:56,493 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 16:24:56,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 16:24:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-21 16:24:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 16:24:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-21 16:24:56,528 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-21 16:24:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:56,528 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-21 16:24:56,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:24:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-21 16:24:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:24:56,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:56,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:56,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:24:56,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:56,531 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-21 16:24:56,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:56,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961609043] [2020-08-21 16:24:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,777 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:24:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:24:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:24:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:56,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961609043] [2020-08-21 16:24:56,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:56,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:24:56,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567308580] [2020-08-21 16:24:56,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:24:56,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:24:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:24:56,860 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-21 16:24:57,232 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:58,324 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:58,943 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-21 16:24:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:24:58,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 16:24:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:58,949 INFO L225 Difference]: With dead ends: 331 [2020-08-21 16:24:58,950 INFO L226 Difference]: Without dead ends: 236 [2020-08-21 16:24:58,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:24:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-21 16:24:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-21 16:24:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 16:24:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-21 16:24:58,995 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-21 16:24:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:58,996 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-21 16:24:58,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:24:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-21 16:24:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 16:24:58,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:58,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:58,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:24:58,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:58,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:58,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-21 16:24:58,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:58,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727916505] [2020-08-21 16:24:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,337 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:24:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:24:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 16:24:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:59,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727916505] [2020-08-21 16:24:59,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:59,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:24:59,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158625639] [2020-08-21 16:24:59,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:59,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:59,557 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-21 16:24:59,980 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:00,295 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:00,549 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:00,809 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:01,330 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:02,228 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:02,616 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:02,859 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:03,133 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:03,432 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:03,699 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:05,061 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:05,426 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:06,051 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-21 16:25:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:25:06,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-21 16:25:06,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:06,061 INFO L225 Difference]: With dead ends: 677 [2020-08-21 16:25:06,061 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 16:25:06,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 16:25:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 16:25:06,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-21 16:25:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-21 16:25:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-21 16:25:06,164 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-21 16:25:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:06,165 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-21 16:25:06,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-21 16:25:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 16:25:06,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:06,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:25:06,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:25:06,170 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:06,171 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-21 16:25:06,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:06,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988118793] [2020-08-21 16:25:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,481 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:06,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 16:25:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:25:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:25:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:25:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 16:25:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 16:25:06,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988118793] [2020-08-21 16:25:06,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:06,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:06,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339786862] [2020-08-21 16:25:06,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:06,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:06,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:06,760 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-21 16:25:07,360 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:07,995 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:08,493 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:08,761 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:09,046 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:09,299 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:09,552 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:09,806 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:10,086 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:10,346 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:11,909 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:12,145 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:12,388 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:12,629 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:13,154 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-21 16:25:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 16:25:13,155 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-21 16:25:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:13,160 INFO L225 Difference]: With dead ends: 904 [2020-08-21 16:25:13,161 INFO L226 Difference]: Without dead ends: 480 [2020-08-21 16:25:13,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 16:25:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-21 16:25:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-21 16:25:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-21 16:25:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-21 16:25:13,258 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-21 16:25:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:13,258 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-21 16:25:13,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-21 16:25:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-21 16:25:13,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:13,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:13,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:25:13,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:13,262 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-21 16:25:13,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:13,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194855895] [2020-08-21 16:25:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,532 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 16:25:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:25:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 16:25:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 16:25:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:25:13,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194855895] [2020-08-21 16:25:13,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:13,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:25:13,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983330122] [2020-08-21 16:25:13,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:25:13,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:13,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:25:13,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:25:13,771 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-21 16:25:14,591 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:14,827 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,047 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,573 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,824 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:16,043 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:16,939 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-21 16:25:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:25:16,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-21 16:25:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:16,942 INFO L225 Difference]: With dead ends: 761 [2020-08-21 16:25:16,945 INFO L226 Difference]: Without dead ends: 367 [2020-08-21 16:25:16,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:25:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-21 16:25:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-21 16:25:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-21 16:25:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-21 16:25:17,020 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-21 16:25:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:17,021 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-21 16:25:17,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-21 16:25:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 16:25:17,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:17,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:17,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:25:17,024 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-21 16:25:17,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:17,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450441914] [2020-08-21 16:25:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,303 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:25:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:25:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:25:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 16:25:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 16:25:17,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450441914] [2020-08-21 16:25:17,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:17,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:25:17,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631557689] [2020-08-21 16:25:17,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:25:17,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:17,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:25:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:25:17,605 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-21 16:25:19,230 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:19,469 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:19,707 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:19,941 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:20,280 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-21 16:25:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:25:20,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 16:25:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:20,283 INFO L225 Difference]: With dead ends: 632 [2020-08-21 16:25:20,284 INFO L226 Difference]: Without dead ends: 372 [2020-08-21 16:25:20,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:25:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-21 16:25:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-21 16:25:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-21 16:25:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-21 16:25:20,368 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-21 16:25:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-21 16:25:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:25:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-21 16:25:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 16:25:20,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:20,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:20,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:25:20,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:20,375 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-21 16:25:20,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:20,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285209149] [2020-08-21 16:25:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,762 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:25:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:25:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:25:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 16:25:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 16:25:20,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285209149] [2020-08-21 16:25:20,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:20,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:25:20,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138323402] [2020-08-21 16:25:20,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:25:20,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:25:20,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:25:20,948 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-21 16:25:21,580 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:22,948 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:23,190 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:23,419 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:23,644 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:23,909 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:24,160 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-21 16:25:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:25:24,161 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 16:25:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:24,166 INFO L225 Difference]: With dead ends: 379 [2020-08-21 16:25:24,166 INFO L226 Difference]: Without dead ends: 376 [2020-08-21 16:25:24,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:25:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-21 16:25:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-21 16:25:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-21 16:25:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-21 16:25:24,241 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-21 16:25:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:24,243 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-21 16:25:24,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:25:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-21 16:25:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 16:25:24,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:24,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:25:24,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:25:24,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-21 16:25:24,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:24,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733437652] [2020-08-21 16:25:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,671 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:25:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:25:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:25:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 16:25:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 16:25:24,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733437652] [2020-08-21 16:25:24,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:24,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:25:24,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621602669] [2020-08-21 16:25:24,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:25:24,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:24,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:25:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:25:24,906 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-21 16:25:25,453 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:26,041 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:26,766 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:27,034 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:27,299 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:27,533 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:27,798 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:28,030 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:29,039 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:29,743 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-21 16:25:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 16:25:29,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-21 16:25:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:29,748 INFO L225 Difference]: With dead ends: 832 [2020-08-21 16:25:29,749 INFO L226 Difference]: Without dead ends: 567 [2020-08-21 16:25:29,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 16:25:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-21 16:25:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-21 16:25:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-21 16:25:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-21 16:25:29,838 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-21 16:25:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:29,838 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-21 16:25:29,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:29,839 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-21 16:25:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-21 16:25:29,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:29,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:29,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:25:29,843 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-21 16:25:29,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:29,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554974504] [2020-08-21 16:25:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,135 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:25:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 16:25:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 16:25:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 16:25:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 16:25:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 16:25:30,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554974504] [2020-08-21 16:25:30,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:30,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:30,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763121595] [2020-08-21 16:25:30,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:30,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:30,471 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-21 16:25:31,487 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:31,770 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:33,233 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:25:33,474 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:33,703 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:34,138 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 16:25:35,517 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 16:25:35,782 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:25:36,082 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:36,335 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:37,220 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-21 16:25:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 16:25:37,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-21 16:25:37,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:37,228 INFO L225 Difference]: With dead ends: 1322 [2020-08-21 16:25:37,228 INFO L226 Difference]: Without dead ends: 920 [2020-08-21 16:25:37,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 16:25:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-21 16:25:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-21 16:25:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-21 16:25:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-21 16:25:37,365 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-21 16:25:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:37,366 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-21 16:25:37,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-21 16:25:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-21 16:25:37,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:37,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:37,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:25:37,370 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-21 16:25:37,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:37,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870065883] [2020-08-21 16:25:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,658 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:25:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 16:25:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 16:25:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 16:25:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-21 16:25:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 16:25:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-21 16:25:37,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870065883] [2020-08-21 16:25:37,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:37,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:37,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250981084] [2020-08-21 16:25:37,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:37,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:37,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:37,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:37,909 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-21 16:25:38,819 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:39,070 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:39,326 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:40,491 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:40,743 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:41,024 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:41,271 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:41,579 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-21 16:25:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:25:41,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-21 16:25:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:41,581 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 16:25:41,581 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:25:41,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:25:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:25:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:25:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:25:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:25:41,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-21 16:25:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:41,586 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:25:41,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:41,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:25:41,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:25:41,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:25:41,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:25:43,161 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-21 16:25:44,185 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248