/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:18:37,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:18:37,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:18:37,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:18:37,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:18:37,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:18:37,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:18:37,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:18:37,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:18:37,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:18:37,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:18:37,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:18:37,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:18:37,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:18:37,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:18:37,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:18:37,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:18:37,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:18:37,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:18:37,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:18:37,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:18:37,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:18:37,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:18:37,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:18:37,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:18:37,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:18:37,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:18:37,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:18:37,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:18:37,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:18:37,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:18:37,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:18:37,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:18:37,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:18:37,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:18:37,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:18:37,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:18:37,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:18:37,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:18:37,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:18:37,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:18:37,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:18:37,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:18:37,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:18:37,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:18:37,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:18:37,837 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:18:37,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:18:37,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:18:37,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:18:37,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:18:37,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:18:37,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:18:37,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:18:37,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:18:37,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:18:37,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:18:37,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:18:37,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:18:37,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:18:37,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:18:37,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:18:37,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:18:37,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:18:37,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:18:37,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:18:37,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:18:37,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:18:37,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:18:37,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:18:37,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:18:37,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:18:38,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:18:38,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:18:38,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:18:38,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:18:38,174 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:18:38,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-19 04:18:38,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75935f1f/fced0b740aa340fa933ad22d04d25fa3/FLAGad627ad0a [2020-08-19 04:18:38,866 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:18:38,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-19 04:18:38,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75935f1f/fced0b740aa340fa933ad22d04d25fa3/FLAGad627ad0a [2020-08-19 04:18:39,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75935f1f/fced0b740aa340fa933ad22d04d25fa3 [2020-08-19 04:18:39,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:18:39,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:18:39,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:39,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:18:39,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:18:39,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e98fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39, skipping insertion in model container [2020-08-19 04:18:39,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:18:39,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:18:39,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:39,698 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:18:39,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:18:39,814 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:18:39,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39 WrapperNode [2020-08-19 04:18:39,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:18:39,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:18:39,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:18:39,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:18:39,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... [2020-08-19 04:18:39,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:18:39,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:18:39,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:18:39,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:18:39,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:18:39,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:18:39,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:18:39,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:39,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:18:39,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:18:39,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:18:39,968 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:18:39,969 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:18:39,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:18:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:18:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:18:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:18:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:18:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:18:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:18:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:18:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:18:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:18:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:18:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:18:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:18:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:18:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:18:41,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:18:41,070 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:18:41,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:41 BoogieIcfgContainer [2020-08-19 04:18:41,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:18:41,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:18:41,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:18:41,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:18:41,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:18:39" (1/3) ... [2020-08-19 04:18:41,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30134c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:41, skipping insertion in model container [2020-08-19 04:18:41,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:18:39" (2/3) ... [2020-08-19 04:18:41,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d30134c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:18:41, skipping insertion in model container [2020-08-19 04:18:41,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:18:41" (3/3) ... [2020-08-19 04:18:41,085 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-08-19 04:18:41,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:18:41,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:18:41,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:18:41,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:18:41,146 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:18:41,147 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:18:41,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:18:41,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:18:41,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:18:41,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:18:41,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:18:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-19 04:18:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:18:41,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:41,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:41,185 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:41,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2020-08-19 04:18:41,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:41,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879843382] [2020-08-19 04:18:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:41,937 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:18:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:18:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:18:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:42,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879843382] [2020-08-19 04:18:42,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:42,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:18:42,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632673132] [2020-08-19 04:18:42,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:18:42,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:42,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:18:42,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:42,127 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 4 states. [2020-08-19 04:18:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:43,440 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2020-08-19 04:18:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:18:43,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 04:18:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:43,466 INFO L225 Difference]: With dead ends: 341 [2020-08-19 04:18:43,466 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 04:18:43,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:18:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 04:18:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-19 04:18:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-19 04:18:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2020-08-19 04:18:43,580 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2020-08-19 04:18:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:43,581 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2020-08-19 04:18:43,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:18:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2020-08-19 04:18:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 04:18:43,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:43,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:43,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:18:43,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:43,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2020-08-19 04:18:43,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:43,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813159111] [2020-08-19 04:18:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,004 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:18:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 04:18:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:44,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813159111] [2020-08-19 04:18:44,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:44,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:44,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977075953] [2020-08-19 04:18:44,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:44,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:44,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:44,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:44,160 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 9 states. [2020-08-19 04:18:44,541 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:44,902 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:45,180 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:45,450 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:47,015 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2020-08-19 04:18:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:18:47,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 04:18:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:47,022 INFO L225 Difference]: With dead ends: 314 [2020-08-19 04:18:47,022 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 04:18:47,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:18:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 04:18:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-19 04:18:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-19 04:18:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-19 04:18:47,070 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2020-08-19 04:18:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:47,071 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-19 04:18:47,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-19 04:18:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 04:18:47,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:47,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:47,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:18:47,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:47,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2020-08-19 04:18:47,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:47,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133470878] [2020-08-19 04:18:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,355 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:18:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 04:18:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 04:18:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:47,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133470878] [2020-08-19 04:18:47,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:47,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:18:47,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51929685] [2020-08-19 04:18:47,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:18:47,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:18:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:18:47,475 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 7 states. [2020-08-19 04:18:47,894 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:49,374 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:50,129 INFO L93 Difference]: Finished difference Result 457 states and 594 transitions. [2020-08-19 04:18:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:18:50,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-19 04:18:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:50,138 INFO L225 Difference]: With dead ends: 457 [2020-08-19 04:18:50,138 INFO L226 Difference]: Without dead ends: 329 [2020-08-19 04:18:50,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:18:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-19 04:18:50,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2020-08-19 04:18:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 04:18:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-08-19 04:18:50,249 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 82 [2020-08-19 04:18:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:50,252 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-08-19 04:18:50,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:18:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-08-19 04:18:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 04:18:50,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:50,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:50,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:18:50,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2020-08-19 04:18:50,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:50,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453745929] [2020-08-19 04:18:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,599 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:18:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:18:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:18:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 04:18:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 04:18:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:18:50,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453745929] [2020-08-19 04:18:50,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:50,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:18:50,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098810907] [2020-08-19 04:18:50,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:18:50,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:50,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:18:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:18:50,726 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 9 states. [2020-08-19 04:18:51,072 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:51,668 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:52,445 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:18:52,766 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:53,195 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:53,427 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:54,150 INFO L93 Difference]: Finished difference Result 558 states and 704 transitions. [2020-08-19 04:18:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:18:54,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-19 04:18:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:54,155 INFO L225 Difference]: With dead ends: 558 [2020-08-19 04:18:54,155 INFO L226 Difference]: Without dead ends: 318 [2020-08-19 04:18:54,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:18:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-19 04:18:54,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 267. [2020-08-19 04:18:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-19 04:18:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 316 transitions. [2020-08-19 04:18:54,212 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 316 transitions. Word has length 96 [2020-08-19 04:18:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:54,213 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 316 transitions. [2020-08-19 04:18:54,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:18:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 316 transitions. [2020-08-19 04:18:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 04:18:54,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:54,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:54,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:18:54,215 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:54,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1863541240, now seen corresponding path program 1 times [2020-08-19 04:18:54,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:54,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097689640] [2020-08-19 04:18:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,467 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:18:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:18:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:18:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:18:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 04:18:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 04:18:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:54,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097689640] [2020-08-19 04:18:54,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:54,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:18:54,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391818456] [2020-08-19 04:18:54,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:18:54,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:18:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:18:54,660 INFO L87 Difference]: Start difference. First operand 267 states and 316 transitions. Second operand 10 states. [2020-08-19 04:18:55,242 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:55,865 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:56,105 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:18:56,347 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:56,600 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:18:57,531 INFO L93 Difference]: Finished difference Result 518 states and 636 transitions. [2020-08-19 04:18:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:18:57,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 04:18:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:18:57,544 INFO L225 Difference]: With dead ends: 518 [2020-08-19 04:18:57,544 INFO L226 Difference]: Without dead ends: 279 [2020-08-19 04:18:57,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:18:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-19 04:18:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-08-19 04:18:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 04:18:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2020-08-19 04:18:57,608 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 93 [2020-08-19 04:18:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:18:57,609 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2020-08-19 04:18:57,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:18:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2020-08-19 04:18:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 04:18:57,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:18:57,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:18:57,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:18:57,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:18:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:18:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2020-08-19 04:18:57,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:18:57,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473103717] [2020-08-19 04:18:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:18:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,907 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:18:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:18:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:18:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:18:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:18:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:18:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:18:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:18:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:18:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:18:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:18:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:18:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 04:18:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:18:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:18:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:18:58,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473103717] [2020-08-19 04:18:58,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:18:58,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:18:58,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55415348] [2020-08-19 04:18:58,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:18:58,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:18:58,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:18:58,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:18:58,048 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 11 states. [2020-08-19 04:18:58,554 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:18:58,802 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:59,049 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:59,737 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:18:59,991 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:00,227 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:01,240 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2020-08-19 04:19:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:19:01,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-19 04:19:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:01,242 INFO L225 Difference]: With dead ends: 500 [2020-08-19 04:19:01,242 INFO L226 Difference]: Without dead ends: 286 [2020-08-19 04:19:01,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:19:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-19 04:19:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2020-08-19 04:19:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-19 04:19:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2020-08-19 04:19:01,285 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2020-08-19 04:19:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:01,285 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2020-08-19 04:19:01,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:19:01,285 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2020-08-19 04:19:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 04:19:01,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:01,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:01,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:19:01,287 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2020-08-19 04:19:01,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:01,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451209714] [2020-08-19 04:19:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,557 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:19:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:19:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 04:19:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 04:19:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:01,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451209714] [2020-08-19 04:19:01,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:01,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:19:01,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758942829] [2020-08-19 04:19:01,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:19:01,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:01,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:19:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:19:01,733 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 7 states. [2020-08-19 04:19:02,101 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:02,666 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:04,584 INFO L93 Difference]: Finished difference Result 679 states and 843 transitions. [2020-08-19 04:19:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:19:04,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-19 04:19:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:04,589 INFO L225 Difference]: With dead ends: 679 [2020-08-19 04:19:04,589 INFO L226 Difference]: Without dead ends: 461 [2020-08-19 04:19:04,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-19 04:19:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 423. [2020-08-19 04:19:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-19 04:19:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 494 transitions. [2020-08-19 04:19:04,668 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 494 transitions. Word has length 97 [2020-08-19 04:19:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:04,668 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 494 transitions. [2020-08-19 04:19:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:19:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 494 transitions. [2020-08-19 04:19:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-19 04:19:04,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:04,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:04,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:19:04,674 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:04,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2020-08-19 04:19:04,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:04,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024751922] [2020-08-19 04:19:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,972 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:19:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:19:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 04:19:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 04:19:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:19:05,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024751922] [2020-08-19 04:19:05,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:19:05,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:19:05,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172130947] [2020-08-19 04:19:05,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:19:05,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:05,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:19:05,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:19:05,142 INFO L87 Difference]: Start difference. First operand 423 states and 494 transitions. Second operand 12 states. [2020-08-19 04:19:05,752 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:06,406 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:07,504 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:07,808 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:08,069 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:08,335 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:08,603 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:10,111 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:10,394 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:11,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:11,186 INFO L93 Difference]: Finished difference Result 1166 states and 1447 transitions. [2020-08-19 04:19:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 04:19:11,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-19 04:19:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:11,198 INFO L225 Difference]: With dead ends: 1166 [2020-08-19 04:19:11,198 INFO L226 Difference]: Without dead ends: 846 [2020-08-19 04:19:11,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 04:19:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-08-19 04:19:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 733. [2020-08-19 04:19:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-19 04:19:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 847 transitions. [2020-08-19 04:19:11,340 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 847 transitions. Word has length 101 [2020-08-19 04:19:11,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:11,341 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 847 transitions. [2020-08-19 04:19:11,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:19:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 847 transitions. [2020-08-19 04:19:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-19 04:19:11,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:11,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:11,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:19:11,346 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:11,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:11,346 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2020-08-19 04:19:11,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:11,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413821117] [2020-08-19 04:19:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,645 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 04:19:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 04:19:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 04:19:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 04:19:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-19 04:19:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 04:19:11,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413821117] [2020-08-19 04:19:11,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:11,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:11,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652960887] [2020-08-19 04:19:11,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:11,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:11,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:11,996 INFO L87 Difference]: Start difference. First operand 733 states and 847 transitions. Second operand 16 states. [2020-08-19 04:19:12,605 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:12,951 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-19 04:19:13,214 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:19:13,466 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:19:14,101 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:14,374 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 04:19:14,755 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 04:19:15,473 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:15,812 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:19:16,627 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:17,178 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-19 04:19:17,506 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:18,054 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:18,448 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:19,057 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 04:19:19,341 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:19:20,019 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-19 04:19:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:20,524 INFO L93 Difference]: Finished difference Result 1574 states and 1876 transitions. [2020-08-19 04:19:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-19 04:19:20,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-19 04:19:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:20,531 INFO L225 Difference]: With dead ends: 1574 [2020-08-19 04:19:20,531 INFO L226 Difference]: Without dead ends: 940 [2020-08-19 04:19:20,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-19 04:19:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-19 04:19:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 861. [2020-08-19 04:19:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-08-19 04:19:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1005 transitions. [2020-08-19 04:19:20,689 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1005 transitions. Word has length 178 [2020-08-19 04:19:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:20,689 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1005 transitions. [2020-08-19 04:19:20,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 04:19:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1005 transitions. [2020-08-19 04:19:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-19 04:19:20,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:20,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:20,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:19:20,697 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2132607531, now seen corresponding path program 1 times [2020-08-19 04:19:20,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:20,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664084768] [2020-08-19 04:19:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:20,997 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:20,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:19:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:19:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 04:19:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:19:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-19 04:19:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 04:19:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 04:19:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-19 04:19:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-19 04:19:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-19 04:19:21,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664084768] [2020-08-19 04:19:21,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:21,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 04:19:21,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366236131] [2020-08-19 04:19:21,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:19:21,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:19:21,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:19:21,657 INFO L87 Difference]: Start difference. First operand 861 states and 1005 transitions. Second operand 15 states. [2020-08-19 04:19:23,040 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:19:23,704 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:24,165 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 04:19:24,624 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 04:19:24,858 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:25,127 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:25,375 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:25,620 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:27,187 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:28,682 INFO L93 Difference]: Finished difference Result 2247 states and 2712 transitions. [2020-08-19 04:19:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 04:19:28,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-19 04:19:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:28,692 INFO L225 Difference]: With dead ends: 2247 [2020-08-19 04:19:28,692 INFO L226 Difference]: Without dead ends: 1387 [2020-08-19 04:19:28,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 04:19:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-08-19 04:19:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1191. [2020-08-19 04:19:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-08-19 04:19:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1402 transitions. [2020-08-19 04:19:28,951 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1402 transitions. Word has length 301 [2020-08-19 04:19:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:28,953 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1402 transitions. [2020-08-19 04:19:28,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 04:19:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1402 transitions. [2020-08-19 04:19:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-19 04:19:28,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:28,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:19:28,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:19:28,962 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:28,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1264198018, now seen corresponding path program 1 times [2020-08-19 04:19:28,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:28,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913767381] [2020-08-19 04:19:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,270 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:19:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:19:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:19:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-19 04:19:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:19:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-19 04:19:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 04:19:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-19 04:19:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 04:19:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-19 04:19:29,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913767381] [2020-08-19 04:19:29,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:29,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 04:19:29,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936011202] [2020-08-19 04:19:29,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 04:19:29,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:29,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 04:19:29,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:19:29,707 INFO L87 Difference]: Start difference. First operand 1191 states and 1402 transitions. Second operand 16 states. [2020-08-19 04:19:30,452 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:30,773 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 04:19:31,030 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:31,285 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:19:31,889 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:32,746 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:19:33,113 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:33,383 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:33,909 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:34,882 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:35,133 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:19:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:19:35,535 INFO L93 Difference]: Finished difference Result 2264 states and 2700 transitions. [2020-08-19 04:19:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 04:19:35,536 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-08-19 04:19:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:19:35,546 INFO L225 Difference]: With dead ends: 2264 [2020-08-19 04:19:35,546 INFO L226 Difference]: Without dead ends: 1194 [2020-08-19 04:19:35,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 04:19:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-08-19 04:19:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1151. [2020-08-19 04:19:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-08-19 04:19:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1335 transitions. [2020-08-19 04:19:35,731 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1335 transitions. Word has length 303 [2020-08-19 04:19:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:19:35,731 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1335 transitions. [2020-08-19 04:19:35,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 04:19:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1335 transitions. [2020-08-19 04:19:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-19 04:19:35,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:19:35,739 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:19:35,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:19:35,739 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:19:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:19:35,740 INFO L82 PathProgramCache]: Analyzing trace with hash -711568706, now seen corresponding path program 1 times [2020-08-19 04:19:35,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:19:35,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392784111] [2020-08-19 04:19:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:19:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,014 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:19:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:19:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:19:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:19:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:19:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:19:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:19:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 04:19:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:19:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:19:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:19:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:19:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:19:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-19 04:19:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:19:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:19:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:19:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:19:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 04:19:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-19 04:19:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:19:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 04:19:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:19:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:19:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:19:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-19 04:19:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-19 04:19:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:19:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-19 04:19:36,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392784111] [2020-08-19 04:19:36,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:19:36,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 04:19:36,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406917825] [2020-08-19 04:19:36,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:19:36,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:19:36,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:19:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:19:36,448 INFO L87 Difference]: Start difference. First operand 1151 states and 1335 transitions. Second operand 14 states. [2020-08-19 04:19:37,071 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189