/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:58:46,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:58:46,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:58:46,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:58:46,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:58:46,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:58:46,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:58:46,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:58:46,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:58:46,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:58:46,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:58:46,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:58:46,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:58:46,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:58:46,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:58:46,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:58:46,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:58:46,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:58:46,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:58:46,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:58:46,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:58:46,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:58:46,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:58:46,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:58:46,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:58:46,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:58:46,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:58:46,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:58:46,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:58:46,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:58:46,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:58:46,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:58:46,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:58:46,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:58:46,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:58:46,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:58:46,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:58:46,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:58:46,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:58:46,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:58:46,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:58:46,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:58:46,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:58:46,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:58:46,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:58:46,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:58:46,966 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:58:46,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:58:46,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:58:46,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:58:46,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:58:46,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:58:46,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:58:46,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:58:46,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:58:46,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:58:46,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:58:46,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:58:46,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:58:46,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:58:46,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:58:46,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:58:46,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:58:46,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:58:46,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:58:46,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:58:46,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:58:46,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:58:46,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:58:46,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:58:46,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:58:46,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:58:47,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:58:47,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:58:47,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:58:47,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:58:47,297 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:58:47,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-21 21:58:47,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e9a7138/733fe607d09944d8be7845819489f03b/FLAGff60843d9 [2020-08-21 21:58:47,893 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:58:47,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-21 21:58:47,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e9a7138/733fe607d09944d8be7845819489f03b/FLAGff60843d9 [2020-08-21 21:58:48,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e9a7138/733fe607d09944d8be7845819489f03b [2020-08-21 21:58:48,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:58:48,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:58:48,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:58:48,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:58:48,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:58:48,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18839cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48, skipping insertion in model container [2020-08-21 21:58:48,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:58:48,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:58:48,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:58:48,633 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:58:48,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:58:48,763 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:58:48,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48 WrapperNode [2020-08-21 21:58:48,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:58:48,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:58:48,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:58:48,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:58:48,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... [2020-08-21 21:58:48,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:58:48,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:58:48,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:58:48,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:58:48,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:58:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:58:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:58:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:58:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:58:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:58:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:58:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:58:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:58:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:58:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:58:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:58:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:58:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:58:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:58:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:58:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:58:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:58:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:58:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:58:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:58:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:58:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:58:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:58:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:58:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:58:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:58:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:58:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:58:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:58:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:58:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:58:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:58:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:58:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:58:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:58:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:58:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:58:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:58:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:58:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:58:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:58:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:58:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:58:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:58:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:58:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:58:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:58:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:58:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:58:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:58:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:58:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:58:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:58:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:58:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:58:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:58:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:58:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:58:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:58:50,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:58:50,158 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:58:50,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:58:50 BoogieIcfgContainer [2020-08-21 21:58:50,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:58:50,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:58:50,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:58:50,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:58:50,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:58:48" (1/3) ... [2020-08-21 21:58:50,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ba72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:58:50, skipping insertion in model container [2020-08-21 21:58:50,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:58:48" (2/3) ... [2020-08-21 21:58:50,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ba72c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:58:50, skipping insertion in model container [2020-08-21 21:58:50,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:58:50" (3/3) ... [2020-08-21 21:58:50,179 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-08-21 21:58:50,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:58:50,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:58:50,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:58:50,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:58:50,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:58:50,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:58:50,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:58:50,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:58:50,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:58:50,239 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:58:50,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:58:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 21:58:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:58:50,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:50,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:58:50,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2020-08-21 21:58:50,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:50,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711791566] [2020-08-21 21:58:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:50,982 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:58:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:58:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:51,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711791566] [2020-08-21 21:58:51,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:51,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:58:51,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652676035] [2020-08-21 21:58:51,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:58:51,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:58:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:58:51,110 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-21 21:58:52,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:52,222 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2020-08-21 21:58:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:58:52,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 21:58:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:52,248 INFO L225 Difference]: With dead ends: 311 [2020-08-21 21:58:52,248 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 21:58:52,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:58:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 21:58:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2020-08-21 21:58:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:58:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-08-21 21:58:52,364 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2020-08-21 21:58:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:52,364 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-08-21 21:58:52,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:58:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-08-21 21:58:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:58:52,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:52,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:58:52,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:58:52,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:52,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:52,370 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2020-08-21 21:58:52,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:52,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973203430] [2020-08-21 21:58:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,762 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:52,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:58:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:58:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:52,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973203430] [2020-08-21 21:58:52,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:52,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:58:52,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159645037] [2020-08-21 21:58:52,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:58:52,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:52,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:58:52,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:58:52,857 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2020-08-21 21:58:53,336 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:54,397 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-08-21 21:58:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:58:54,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 21:58:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:54,400 INFO L225 Difference]: With dead ends: 246 [2020-08-21 21:58:54,400 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 21:58:54,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:58:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 21:58:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-08-21 21:58:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 21:58:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2020-08-21 21:58:54,442 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2020-08-21 21:58:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:54,443 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2020-08-21 21:58:54,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:58:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2020-08-21 21:58:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:58:54,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:54,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:58:54,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:58:54,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2020-08-21 21:58:54,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:54,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721820467] [2020-08-21 21:58:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,780 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:58:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:58:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:54,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721820467] [2020-08-21 21:58:54,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:54,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:58:54,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401965147] [2020-08-21 21:58:54,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:58:54,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:54,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:58:54,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:58:54,863 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2020-08-21 21:58:55,266 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:58:55,589 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:55,835 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:56,076 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:58:56,936 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:58:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:58:58,942 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2020-08-21 21:58:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:58:58,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 21:58:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:58:58,948 INFO L225 Difference]: With dead ends: 439 [2020-08-21 21:58:58,948 INFO L226 Difference]: Without dead ends: 338 [2020-08-21 21:58:58,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:58:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-21 21:58:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2020-08-21 21:58:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-08-21 21:58:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-08-21 21:58:59,032 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2020-08-21 21:58:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:58:59,033 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-08-21 21:58:59,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:58:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-08-21 21:58:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:58:59,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:58:59,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:58:59,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:58:59,038 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:58:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:58:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2020-08-21 21:58:59,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:58:59,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676414636] [2020-08-21 21:58:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:58:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,360 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:58:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:58:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:58:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:58:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:58:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:58:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:58:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:58:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:58:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:58:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:58:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:58:59,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676414636] [2020-08-21 21:58:59,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:58:59,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:58:59,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358886862] [2020-08-21 21:58:59,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:58:59,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:58:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:58:59,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:58:59,453 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2020-08-21 21:58:59,909 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:01,015 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:01,448 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:01,693 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:01,972 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:03,451 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2020-08-21 21:59:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:59:03,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 21:59:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:03,459 INFO L225 Difference]: With dead ends: 864 [2020-08-21 21:59:03,459 INFO L226 Difference]: Without dead ends: 623 [2020-08-21 21:59:03,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:59:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-21 21:59:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2020-08-21 21:59:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-21 21:59:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2020-08-21 21:59:03,578 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2020-08-21 21:59:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:03,579 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2020-08-21 21:59:03,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:59:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2020-08-21 21:59:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 21:59:03,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:03,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:03,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:59:03,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2020-08-21 21:59:03,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:03,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639306331] [2020-08-21 21:59:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,856 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:59:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:59:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 21:59:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:04,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639306331] [2020-08-21 21:59:04,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:04,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:04,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631717193] [2020-08-21 21:59:04,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:04,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:04,003 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2020-08-21 21:59:04,369 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:05,403 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:05,700 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:05,947 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:06,624 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:07,930 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2020-08-21 21:59:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 21:59:07,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 21:59:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:07,938 INFO L225 Difference]: With dead ends: 1373 [2020-08-21 21:59:07,938 INFO L226 Difference]: Without dead ends: 915 [2020-08-21 21:59:07,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:59:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-21 21:59:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2020-08-21 21:59:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-08-21 21:59:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2020-08-21 21:59:08,091 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2020-08-21 21:59:08,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:08,092 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2020-08-21 21:59:08,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2020-08-21 21:59:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:59:08,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:08,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:08,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:59:08,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2020-08-21 21:59:08,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:08,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545014995] [2020-08-21 21:59:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,338 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:59:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:08,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545014995] [2020-08-21 21:59:08,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:08,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:08,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271970660] [2020-08-21 21:59:08,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:08,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:08,525 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2020-08-21 21:59:08,876 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:09,974 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:10,227 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 21:59:10,520 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:10,793 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:12,593 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2020-08-21 21:59:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:59:12,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 21:59:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:12,609 INFO L225 Difference]: With dead ends: 2413 [2020-08-21 21:59:12,609 INFO L226 Difference]: Without dead ends: 1732 [2020-08-21 21:59:12,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 21:59:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-21 21:59:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2020-08-21 21:59:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-21 21:59:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2020-08-21 21:59:12,906 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2020-08-21 21:59:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:12,908 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2020-08-21 21:59:12,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2020-08-21 21:59:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:59:12,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:12,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:12,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:59:12,912 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:12,913 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2020-08-21 21:59:12,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:12,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891859710] [2020-08-21 21:59:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,201 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:59:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:13,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891859710] [2020-08-21 21:59:13,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:13,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:13,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797685669] [2020-08-21 21:59:13,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:13,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:13,324 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2020-08-21 21:59:14,851 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:15,120 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:59:15,404 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:15,695 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:17,131 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2020-08-21 21:59:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:59:17,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 21:59:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:17,149 INFO L225 Difference]: With dead ends: 2983 [2020-08-21 21:59:17,149 INFO L226 Difference]: Without dead ends: 1732 [2020-08-21 21:59:17,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:59:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-21 21:59:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2020-08-21 21:59:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-08-21 21:59:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2020-08-21 21:59:17,524 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2020-08-21 21:59:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:17,527 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2020-08-21 21:59:17,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2020-08-21 21:59:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:59:17,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:17,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:17,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:59:17,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:17,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:17,531 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2020-08-21 21:59:17,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:17,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9299225] [2020-08-21 21:59:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,793 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:59:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:17,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9299225] [2020-08-21 21:59:17,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:17,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:59:17,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135973941] [2020-08-21 21:59:17,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:59:17,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:17,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:59:17,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:59:17,987 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2020-08-21 21:59:18,541 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:18,789 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:19,025 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:19,868 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:20,139 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:20,410 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:21,562 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2020-08-21 21:59:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:59:21,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-21 21:59:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:21,576 INFO L225 Difference]: With dead ends: 2667 [2020-08-21 21:59:21,577 INFO L226 Difference]: Without dead ends: 1376 [2020-08-21 21:59:21,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:59:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-08-21 21:59:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2020-08-21 21:59:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-08-21 21:59:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2020-08-21 21:59:21,856 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2020-08-21 21:59:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:21,857 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2020-08-21 21:59:21,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:59:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2020-08-21 21:59:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 21:59:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:21,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:21,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:59:21,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:21,861 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2020-08-21 21:59:21,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:21,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694482860] [2020-08-21 21:59:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,177 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:59:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 21:59:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 21:59:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:22,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694482860] [2020-08-21 21:59:22,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:22,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:59:22,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121144562] [2020-08-21 21:59:22,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:59:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:59:22,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:59:22,275 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2020-08-21 21:59:22,601 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:25,038 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2020-08-21 21:59:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 21:59:25,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 21:59:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:25,052 INFO L225 Difference]: With dead ends: 2185 [2020-08-21 21:59:25,053 INFO L226 Difference]: Without dead ends: 2182 [2020-08-21 21:59:25,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:59:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-08-21 21:59:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2020-08-21 21:59:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-08-21 21:59:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2020-08-21 21:59:25,468 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2020-08-21 21:59:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:25,470 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2020-08-21 21:59:25,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:59:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2020-08-21 21:59:25,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 21:59:25,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:25,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:25,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:59:25,480 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1581752101, now seen corresponding path program 1 times [2020-08-21 21:59:25,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:25,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474956108] [2020-08-21 21:59:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,776 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:59:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:59:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:59:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 21:59:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 21:59:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:59:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 21:59:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 21:59:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 21:59:25,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474956108] [2020-08-21 21:59:25,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:59:25,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 21:59:25,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357480327] [2020-08-21 21:59:25,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:25,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:25,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:25,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:25,985 INFO L87 Difference]: Start difference. First operand 1684 states and 2013 transitions. Second operand 10 states. [2020-08-21 21:59:27,292 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:29,290 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:30,183 INFO L93 Difference]: Finished difference Result 5021 states and 6634 transitions. [2020-08-21 21:59:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 21:59:30,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-08-21 21:59:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:30,208 INFO L225 Difference]: With dead ends: 5021 [2020-08-21 21:59:30,208 INFO L226 Difference]: Without dead ends: 3689 [2020-08-21 21:59:30,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 21:59:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2020-08-21 21:59:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3132. [2020-08-21 21:59:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-08-21 21:59:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3769 transitions. [2020-08-21 21:59:30,906 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3769 transitions. Word has length 152 [2020-08-21 21:59:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:30,907 INFO L479 AbstractCegarLoop]: Abstraction has 3132 states and 3769 transitions. [2020-08-21 21:59:30,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3769 transitions. [2020-08-21 21:59:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 21:59:30,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:30,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:30,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:59:30,917 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash 688265763, now seen corresponding path program 1 times [2020-08-21 21:59:30,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:30,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399233918] [2020-08-21 21:59:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,255 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:59:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:59:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:59:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 21:59:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 21:59:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:59:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 21:59:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 21:59:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 21:59:31,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399233918] [2020-08-21 21:59:31,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:59:31,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 21:59:31,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820400979] [2020-08-21 21:59:31,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 21:59:31,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:31,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 21:59:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:59:31,673 INFO L87 Difference]: Start difference. First operand 3132 states and 3769 transitions. Second operand 19 states. [2020-08-21 21:59:32,368 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:32,681 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:59:32,946 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:59:33,238 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:59:33,965 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:34,603 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:34,993 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:37,494 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:37,757 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,058 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,345 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,600 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,907 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:39,199 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:39,452 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:40,657 INFO L93 Difference]: Finished difference Result 6032 states and 7600 transitions. [2020-08-21 21:59:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 21:59:40,663 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-21 21:59:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:40,681 INFO L225 Difference]: With dead ends: 6032 [2020-08-21 21:59:40,681 INFO L226 Difference]: Without dead ends: 2928 [2020-08-21 21:59:40,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 21:59:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-08-21 21:59:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2436. [2020-08-21 21:59:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-08-21 21:59:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 2848 transitions. [2020-08-21 21:59:41,185 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 2848 transitions. Word has length 152 [2020-08-21 21:59:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:41,186 INFO L479 AbstractCegarLoop]: Abstraction has 2436 states and 2848 transitions. [2020-08-21 21:59:41,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 21:59:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 2848 transitions. [2020-08-21 21:59:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 21:59:41,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:41,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 21:59:41,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:59:41,195 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1034293868, now seen corresponding path program 1 times [2020-08-21 21:59:41,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:41,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136285508] [2020-08-21 21:59:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,472 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:59:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:59:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:59:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 21:59:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 21:59:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 21:59:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 21:59:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 21:59:41,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136285508] [2020-08-21 21:59:41,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:59:41,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 21:59:41,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864199711] [2020-08-21 21:59:41,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:59:41,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:41,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:59:41,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:59:41,715 INFO L87 Difference]: Start difference. First operand 2436 states and 2848 transitions. Second operand 14 states. [2020-08-21 21:59:42,274 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:42,522 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:42,761 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:43,326 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189