/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:25:18,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:25:18,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:25:18,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:25:18,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:25:18,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:25:18,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:25:18,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:25:18,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:25:18,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:25:18,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:25:18,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:25:18,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:25:18,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:25:18,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:25:18,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:25:18,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:25:18,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:25:18,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:25:18,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:25:18,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:25:18,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:25:18,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:25:18,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:25:18,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:25:18,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:25:18,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:25:18,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:25:18,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:25:18,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:25:18,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:25:18,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:25:18,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:25:18,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:25:18,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:25:18,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:25:18,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:25:18,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:25:18,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:25:18,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:25:18,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:25:18,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:25:18,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:25:18,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:25:18,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:25:18,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:25:18,887 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:25:18,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:25:18,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:25:18,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:25:18,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:25:18,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:25:18,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:25:18,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:25:18,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:25:18,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:25:18,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:25:18,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:25:18,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:25:18,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:25:18,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:25:18,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:25:18,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:25:18,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:25:18,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:25:18,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:25:18,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:25:18,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:25:18,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:25:18,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:25:18,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:25:18,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:25:19,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:25:19,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:25:19,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:25:19,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:25:19,225 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:25:19,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 10:25:19,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2eab4153e/023a40d479bc4771a456224ca3d5d96a/FLAGfcff7a0d4 [2020-08-18 10:25:19,869 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:25:19,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 10:25:19,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2eab4153e/023a40d479bc4771a456224ca3d5d96a/FLAGfcff7a0d4 [2020-08-18 10:25:20,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2eab4153e/023a40d479bc4771a456224ca3d5d96a [2020-08-18 10:25:20,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:25:20,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:25:20,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:25:20,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:25:20,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:25:20,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e3fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20, skipping insertion in model container [2020-08-18 10:25:20,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:25:20,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:25:20,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:25:20,686 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:25:20,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:25:20,828 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:25:20,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20 WrapperNode [2020-08-18 10:25:20,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:25:20,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:25:20,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:25:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:25:20,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... [2020-08-18 10:25:20,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:25:20,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:25:20,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:25:20,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:25:20,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:25:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 10:25:20,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:25:20,998 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:25:20,999 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:25:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:25:21,001 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:25:21,002 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:25:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:25:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:25:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:25:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:25:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:25:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:25:21,005 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:25:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:25:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:25:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:25:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:25:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 10:25:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:25:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:25:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:25:21,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:25:21,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:25:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:25:22,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:25:22,165 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:25:22,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:22 BoogieIcfgContainer [2020-08-18 10:25:22,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:25:22,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:25:22,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:25:22,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:25:22,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:25:20" (1/3) ... [2020-08-18 10:25:22,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ace9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:22, skipping insertion in model container [2020-08-18 10:25:22,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:20" (2/3) ... [2020-08-18 10:25:22,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ace9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:22, skipping insertion in model container [2020-08-18 10:25:22,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:22" (3/3) ... [2020-08-18 10:25:22,180 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2020-08-18 10:25:22,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:25:22,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:25:22,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:25:22,238 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:25:22,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:25:22,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:25:22,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:25:22,239 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:25:22,239 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:25:22,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:25:22,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:25:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2020-08-18 10:25:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:25:22,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:22,279 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:22,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:22,286 INFO L82 PathProgramCache]: Analyzing trace with hash 88276295, now seen corresponding path program 1 times [2020-08-18 10:25:22,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:22,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169026044] [2020-08-18 10:25:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,076 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:25:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:25:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:25:23,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169026044] [2020-08-18 10:25:23,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:23,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:25:23,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513053284] [2020-08-18 10:25:23,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:25:23,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:25:23,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:25:23,302 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 5 states. [2020-08-18 10:25:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:25,633 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2020-08-18 10:25:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:25:25,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-18 10:25:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:25,651 INFO L225 Difference]: With dead ends: 442 [2020-08-18 10:25:25,652 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 10:25:25,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:25:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 10:25:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2020-08-18 10:25:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 10:25:25,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2020-08-18 10:25:25,774 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 78 [2020-08-18 10:25:25,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:25,775 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2020-08-18 10:25:25,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:25:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2020-08-18 10:25:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:25:25,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:25,780 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:25,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:25:25,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:25,781 INFO L82 PathProgramCache]: Analyzing trace with hash 128874418, now seen corresponding path program 1 times [2020-08-18 10:25:25,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:25,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184076769] [2020-08-18 10:25:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,174 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:25:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:25:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:25:26,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184076769] [2020-08-18 10:25:26,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:26,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:25:26,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429198845] [2020-08-18 10:25:26,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:25:26,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:26,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:25:26,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:25:26,273 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand 6 states. [2020-08-18 10:25:27,046 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:25:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:28,750 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2020-08-18 10:25:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:25:28,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-18 10:25:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:28,755 INFO L225 Difference]: With dead ends: 366 [2020-08-18 10:25:28,755 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 10:25:28,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:25:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 10:25:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2020-08-18 10:25:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 10:25:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2020-08-18 10:25:28,836 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 79 [2020-08-18 10:25:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:28,836 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2020-08-18 10:25:28,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:25:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2020-08-18 10:25:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:25:28,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:28,840 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:28,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:25:28,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2075074883, now seen corresponding path program 1 times [2020-08-18 10:25:28,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:28,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368802973] [2020-08-18 10:25:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,223 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:25:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:25:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:25:29,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368802973] [2020-08-18 10:25:29,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:29,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:25:29,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505418529] [2020-08-18 10:25:29,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:29,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:29,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:29,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:29,403 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand 12 states. [2020-08-18 10:25:30,006 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:25:30,687 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 10:25:31,471 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 10:25:32,480 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:25:32,849 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 10:25:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:36,524 INFO L93 Difference]: Finished difference Result 628 states and 796 transitions. [2020-08-18 10:25:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:25:36,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 10:25:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:36,537 INFO L225 Difference]: With dead ends: 628 [2020-08-18 10:25:36,537 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 10:25:36,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-18 10:25:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 10:25:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 385. [2020-08-18 10:25:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 10:25:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 480 transitions. [2020-08-18 10:25:36,681 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 480 transitions. Word has length 84 [2020-08-18 10:25:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:36,682 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 480 transitions. [2020-08-18 10:25:36,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 480 transitions. [2020-08-18 10:25:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 10:25:36,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:36,685 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:36,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:25:36,686 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1129127896, now seen corresponding path program 1 times [2020-08-18 10:25:36,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:36,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785703] [2020-08-18 10:25:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,068 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:25:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:25:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:25:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:25:37,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785703] [2020-08-18 10:25:37,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:37,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 10:25:37,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803240860] [2020-08-18 10:25:37,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:25:37,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:25:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:25:37,330 INFO L87 Difference]: Start difference. First operand 385 states and 480 transitions. Second operand 16 states. [2020-08-18 10:25:38,225 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:25:38,929 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 10:25:39,733 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 10:25:40,528 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 10:25:41,384 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:25:42,495 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 10:25:43,244 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 10:25:43,922 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 10:25:44,260 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 10:25:44,607 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:25:45,083 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 10:25:45,524 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 10:25:46,042 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 10:25:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:50,603 INFO L93 Difference]: Finished difference Result 1582 states and 2206 transitions. [2020-08-18 10:25:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 10:25:50,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-18 10:25:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:50,625 INFO L225 Difference]: With dead ends: 1582 [2020-08-18 10:25:50,626 INFO L226 Difference]: Without dead ends: 1238 [2020-08-18 10:25:50,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 10:25:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-18 10:25:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1109. [2020-08-18 10:25:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 10:25:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1462 transitions. [2020-08-18 10:25:50,999 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1462 transitions. Word has length 90 [2020-08-18 10:25:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:50,999 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1462 transitions. [2020-08-18 10:25:50,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:25:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1462 transitions. [2020-08-18 10:25:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:25:51,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:51,004 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:51,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:25:51,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1905240978, now seen corresponding path program 1 times [2020-08-18 10:25:51,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:51,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558871349] [2020-08-18 10:25:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,302 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:25:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:25:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:25:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:25:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:25:51,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558871349] [2020-08-18 10:25:51,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:51,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:25:51,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774841632] [2020-08-18 10:25:51,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:25:51,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:25:51,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:25:51,454 INFO L87 Difference]: Start difference. First operand 1109 states and 1462 transitions. Second operand 8 states. [2020-08-18 10:25:51,999 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:25:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:55,658 INFO L93 Difference]: Finished difference Result 2674 states and 3837 transitions. [2020-08-18 10:25:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:25:55,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 10:25:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:55,669 INFO L225 Difference]: With dead ends: 2674 [2020-08-18 10:25:55,669 INFO L226 Difference]: Without dead ends: 1606 [2020-08-18 10:25:55,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:25:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-08-18 10:25:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1507. [2020-08-18 10:25:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-08-18 10:25:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2004 transitions. [2020-08-18 10:25:56,006 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2004 transitions. Word has length 94 [2020-08-18 10:25:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:56,007 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2004 transitions. [2020-08-18 10:25:56,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:25:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2004 transitions. [2020-08-18 10:25:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-18 10:25:56,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:56,011 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-08-18 10:25:56,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:25:56,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash -509299228, now seen corresponding path program 1 times [2020-08-18 10:25:56,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:56,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184046579] [2020-08-18 10:25:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,346 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:25:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:25:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:25:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:25:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:25:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 10:25:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:25:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:25:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:25:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 10:25:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 10:25:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-18 10:25:56,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184046579] [2020-08-18 10:25:56,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:56,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:56,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032839170] [2020-08-18 10:25:56,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:56,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:56,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:56,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:56,572 INFO L87 Difference]: Start difference. First operand 1507 states and 2004 transitions. Second operand 12 states. [2020-08-18 10:25:57,333 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-08-18 10:25:58,311 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:26:01,531 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:26:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:05,272 INFO L93 Difference]: Finished difference Result 2888 states and 4054 transitions. [2020-08-18 10:26:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 10:26:05,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-08-18 10:26:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:05,286 INFO L225 Difference]: With dead ends: 2888 [2020-08-18 10:26:05,286 INFO L226 Difference]: Without dead ends: 1787 [2020-08-18 10:26:05,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 10:26:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-18 10:26:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1658. [2020-08-18 10:26:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-18 10:26:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2197 transitions. [2020-08-18 10:26:05,791 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2197 transitions. Word has length 122 [2020-08-18 10:26:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:05,793 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2197 transitions. [2020-08-18 10:26:05,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:26:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2197 transitions. [2020-08-18 10:26:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 10:26:05,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:05,800 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:05,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:26:05,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:05,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1104863335, now seen corresponding path program 1 times [2020-08-18 10:26:05,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:05,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383740051] [2020-08-18 10:26:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,201 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:26:06,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:26:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:26:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:26:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:26:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:26:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:26:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 10:26:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:26:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:26:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 10:26:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 10:26:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 10:26:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 10:26:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 10:26:06,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383740051] [2020-08-18 10:26:06,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:26:06,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:26:06,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292106242] [2020-08-18 10:26:06,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:26:06,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:06,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:26:06,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:26:06,479 INFO L87 Difference]: Start difference. First operand 1658 states and 2197 transitions. Second operand 11 states. [2020-08-18 10:26:08,787 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:26:09,106 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:26:09,406 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:26:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:11,137 INFO L93 Difference]: Finished difference Result 3027 states and 4240 transitions. [2020-08-18 10:26:11,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:26:11,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-08-18 10:26:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:11,153 INFO L225 Difference]: With dead ends: 3027 [2020-08-18 10:26:11,154 INFO L226 Difference]: Without dead ends: 1798 [2020-08-18 10:26:11,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:26:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-08-18 10:26:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1658. [2020-08-18 10:26:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-18 10:26:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2195 transitions. [2020-08-18 10:26:11,567 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2195 transitions. Word has length 170 [2020-08-18 10:26:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:11,568 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2195 transitions. [2020-08-18 10:26:11,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:26:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2195 transitions. [2020-08-18 10:26:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 10:26:11,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:11,577 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:11,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:26:11,578 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1658452204, now seen corresponding path program 1 times [2020-08-18 10:26:11,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:11,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116347293] [2020-08-18 10:26:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,916 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:26:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:26:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:26:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:26:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:26:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:26:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:26:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:26:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:26:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 10:26:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 10:26:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 10:26:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 10:26:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 10:26:12,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116347293] [2020-08-18 10:26:12,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:26:12,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:26:12,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450887814] [2020-08-18 10:26:12,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:26:12,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:26:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:26:12,270 INFO L87 Difference]: Start difference. First operand 1658 states and 2195 transitions. Second operand 12 states. [2020-08-18 10:26:14,741 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:26:15,050 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 10:26:15,337 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:26:15,639 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:26:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:17,820 INFO L93 Difference]: Finished difference Result 3435 states and 4802 transitions. [2020-08-18 10:26:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:26:17,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-08-18 10:26:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:17,836 INFO L225 Difference]: With dead ends: 3435 [2020-08-18 10:26:17,837 INFO L226 Difference]: Without dead ends: 1818 [2020-08-18 10:26:17,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:26:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states.