/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=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:41:46,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:41:46,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:41:46,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:41:46,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:41:46,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:41:46,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:41:46,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:41:46,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:41:46,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:41:46,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:41:46,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:41:46,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:41:46,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:41:46,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:41:46,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:41:46,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:41:46,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:41:46,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:41:46,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:41:46,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:41:46,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:41:46,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:41:46,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:41:46,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:41:46,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:41:46,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:41:46,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:41:46,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:41:46,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:41:46,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:41:46,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:41:46,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:41:46,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:41:46,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:41:46,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:41:46,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:41:46,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:41:46,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:41:46,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:41:46,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:41:46,722 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 06:41:46,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:41:46,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:41:46,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:41:46,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:41:46,745 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:41:46,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:41:46,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:41:46,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:41:46,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:41:46,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:41:46,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:41:46,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:41:46,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:41:46,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:41:46,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:41:46,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:41:46,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:41:46,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:41:46,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:41:46,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:41:46,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:41:46,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:41:46,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:41:46,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:41:46,750 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=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:41:47,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:41:47,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:41:47,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:41:47,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:41:47,053 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:41:47,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 06:41:47,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06c040a0/ea0113b2ffa94d73afb0d40e12a68b57/FLAG85fde421b [2020-08-19 06:41:47,663 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:41:47,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 06:41:47,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06c040a0/ea0113b2ffa94d73afb0d40e12a68b57/FLAG85fde421b [2020-08-19 06:41:47,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06c040a0/ea0113b2ffa94d73afb0d40e12a68b57 [2020-08-19 06:41:47,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:41:47,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:41:47,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:41:47,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:41:47,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:41:47,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:41:47" (1/1) ... [2020-08-19 06:41:47,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:47, skipping insertion in model container [2020-08-19 06:41:47,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:41:47" (1/1) ... [2020-08-19 06:41:47,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:41:48,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:41:48,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:41:48,518 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:41:48,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:41:48,690 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:41:48,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48 WrapperNode [2020-08-19 06:41:48,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:41:48,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:41:48,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:41:48,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:41:48,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... [2020-08-19 06:41:48,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:41:48,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:41:48,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:41:48,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:41:48,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:41:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:41:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:41:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:41:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:41:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:41:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:41:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:41:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:41:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:41:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:41:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:41:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:41:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:41:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:41:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:41:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:41:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:41:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:41:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:41:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:41:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:41:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:41:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:41:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:41:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:41:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:41:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:41:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:41:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:41:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:41:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:41:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:41:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:41:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:41:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:41:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:41:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:41:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:41:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:41:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:41:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:41:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:41:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:41:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:41:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:41:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:41:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:41:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:41:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:41:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:41:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:41:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:41:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:41:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:41:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:41:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:41:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:41:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:41:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:41:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:41:50,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:41:50,010 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:41:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:41:50 BoogieIcfgContainer [2020-08-19 06:41:50,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:41:50,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:41:50,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:41:50,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:41:50,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:41:47" (1/3) ... [2020-08-19 06:41:50,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d74b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:41:50, skipping insertion in model container [2020-08-19 06:41:50,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:41:48" (2/3) ... [2020-08-19 06:41:50,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d74b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:41:50, skipping insertion in model container [2020-08-19 06:41:50,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:41:50" (3/3) ... [2020-08-19 06:41:50,032 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-19 06:41:50,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:41:50,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:41:50,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:41:50,096 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:41:50,096 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:41:50,096 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:41:50,097 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:41:50,097 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:41:50,097 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:41:50,097 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:41:50,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:41:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-19 06:41:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 06:41:50,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:50,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:50,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:50,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-19 06:41:50,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:50,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029846991] [2020-08-19 06:41:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,789 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:41:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:41:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:41:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:41:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:41:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:41:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:41:50,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029846991] [2020-08-19 06:41:50,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:50,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:41:50,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080153630] [2020-08-19 06:41:50,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:41:50,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:41:50,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:41:50,947 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-19 06:41:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:41:52,252 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-19 06:41:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:41:52,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 06:41:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:41:52,270 INFO L225 Difference]: With dead ends: 365 [2020-08-19 06:41:52,270 INFO L226 Difference]: Without dead ends: 197 [2020-08-19 06:41:52,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:41:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-19 06:41:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-19 06:41:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-19 06:41:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-19 06:41:52,377 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-19 06:41:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:41:52,381 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-19 06:41:52,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:41:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-19 06:41:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 06:41:52,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:52,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:52,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:41:52,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-19 06:41:52,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:52,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543005188] [2020-08-19 06:41:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,699 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:41:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:41:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:41:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:41:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:41:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:41:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:41:52,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543005188] [2020-08-19 06:41:52,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:52,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:41:52,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152840977] [2020-08-19 06:41:52,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:41:52,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:52,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:41:52,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:41:52,786 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-19 06:41:53,258 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:41:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:41:54,292 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-19 06:41:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:41:54,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 06:41:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:41:54,298 INFO L225 Difference]: With dead ends: 292 [2020-08-19 06:41:54,298 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 06:41:54,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:41:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 06:41:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-19 06:41:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-19 06:41:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-19 06:41:54,343 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-19 06:41:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:41:54,344 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-19 06:41:54,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:41:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-19 06:41:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:41:54,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:54,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:54,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:41:54,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:54,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-19 06:41:54,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:54,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230563734] [2020-08-19 06:41:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,710 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:41:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:41:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:41:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:41:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:41:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:41:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:41:54,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230563734] [2020-08-19 06:41:54,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:54,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:41:54,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862287574] [2020-08-19 06:41:54,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:41:54,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:54,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:41:54,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:41:54,831 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-19 06:41:55,140 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:41:55,433 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:41:55,699 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:41:55,936 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:41:56,669 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:41:58,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:41:58,915 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-19 06:41:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:41:58,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 06:41:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:41:58,921 INFO L225 Difference]: With dead ends: 510 [2020-08-19 06:41:58,921 INFO L226 Difference]: Without dead ends: 384 [2020-08-19 06:41:58,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:41:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-19 06:41:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-19 06:41:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-19 06:41:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-19 06:41:59,044 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-19 06:41:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:41:59,044 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-19 06:41:59,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:41:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-19 06:41:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:41:59,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:41:59,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:41:59,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:41:59,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:41:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:41:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-19 06:41:59,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:41:59,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592718586] [2020-08-19 06:41:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:41:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,375 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:41:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:41:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:41:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:41:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:41:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:41:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:41:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:41:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:41:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:41:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:41:59,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592718586] [2020-08-19 06:41:59,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:41:59,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:41:59,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600455199] [2020-08-19 06:41:59,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:41:59,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:41:59,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:41:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:41:59,504 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-19 06:41:59,883 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:00,215 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:00,494 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:00,722 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:01,258 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:02,092 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:02,474 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:02,816 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:03,092 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:03,418 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:03,779 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:04,146 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:04,570 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:06,850 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-19 06:42:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:42:06,852 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 06:42:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:06,861 INFO L225 Difference]: With dead ends: 1305 [2020-08-19 06:42:06,862 INFO L226 Difference]: Without dead ends: 1011 [2020-08-19 06:42:06,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 06:42:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-19 06:42:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-19 06:42:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-19 06:42:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-19 06:42:07,078 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-19 06:42:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:07,079 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-19 06:42:07,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:42:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-19 06:42:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 06:42:07,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:07,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:07,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:42:07,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-19 06:42:07,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:07,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476577085] [2020-08-19 06:42:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,329 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:07,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:42:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:42:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:42:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 06:42:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:42:07,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476577085] [2020-08-19 06:42:07,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:42:07,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:42:07,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919973207] [2020-08-19 06:42:07,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:42:07,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:07,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:42:07,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:42:07,431 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-19 06:42:07,749 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:09,805 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-19 06:42:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:42:09,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 06:42:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:09,818 INFO L225 Difference]: With dead ends: 2165 [2020-08-19 06:42:09,818 INFO L226 Difference]: Without dead ends: 1279 [2020-08-19 06:42:09,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:42:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-19 06:42:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-19 06:42:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-19 06:42:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-19 06:42:10,038 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-19 06:42:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:10,039 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-19 06:42:10,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:42:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-19 06:42:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:42:10,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:10,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:42:10,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:42:10,043 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-19 06:42:10,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:10,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115511042] [2020-08-19 06:42:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,314 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:42:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:42:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:42:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 06:42:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:42:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:42:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 06:42:10,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115511042] [2020-08-19 06:42:10,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:10,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:42:10,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113663007] [2020-08-19 06:42:10,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:42:10,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:42:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:42:10,531 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-19 06:42:11,092 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 06:42:11,606 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:13,733 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:16,052 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-19 06:42:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 06:42:16,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 06:42:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:16,062 INFO L225 Difference]: With dead ends: 2279 [2020-08-19 06:42:16,063 INFO L226 Difference]: Without dead ends: 1402 [2020-08-19 06:42:16,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:42:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-19 06:42:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-19 06:42:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-19 06:42:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-19 06:42:16,306 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-19 06:42:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:16,306 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-19 06:42:16,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:42:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-19 06:42:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 06:42:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:16,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:16,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:42:16,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-19 06:42:16,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:16,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140002288] [2020-08-19 06:42:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,589 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:42:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:42:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:42:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:42:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 06:42:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 06:42:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 06:42:16,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140002288] [2020-08-19 06:42:16,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:16,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 06:42:16,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257844037] [2020-08-19 06:42:16,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:42:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:42:16,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:42:16,860 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-19 06:42:17,685 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:17,893 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:18,175 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:19,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:19,390 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-19 06:42:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:42:19,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-19 06:42:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:19,399 INFO L225 Difference]: With dead ends: 2395 [2020-08-19 06:42:19,399 INFO L226 Difference]: Without dead ends: 1428 [2020-08-19 06:42:19,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:42:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-19 06:42:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-19 06:42:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-19 06:42:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-19 06:42:19,718 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-19 06:42:19,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:19,720 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-19 06:42:19,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:42:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-19 06:42:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:42:19,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:19,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:19,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:42:19,725 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-08-19 06:42:19,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:19,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481140562] [2020-08-19 06:42:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:19,985 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:19,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:42:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 06:42:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 06:42:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 06:42:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 06:42:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 06:42:20,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481140562] [2020-08-19 06:42:20,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:20,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:42:20,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598245170] [2020-08-19 06:42:20,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:42:20,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:20,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:42:20,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:42:20,239 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 10 states. [2020-08-19 06:42:21,284 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:21,534 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:42:21,811 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:22,054 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:23,307 INFO L93 Difference]: Finished difference Result 2729 states and 3518 transitions. [2020-08-19 06:42:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:42:23,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-08-19 06:42:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:23,321 INFO L225 Difference]: With dead ends: 2729 [2020-08-19 06:42:23,321 INFO L226 Difference]: Without dead ends: 1448 [2020-08-19 06:42:23,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:42:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2020-08-19 06:42:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1325. [2020-08-19 06:42:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-08-19 06:42:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1627 transitions. [2020-08-19 06:42:23,624 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1627 transitions. Word has length 146 [2020-08-19 06:42:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:23,625 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1627 transitions. [2020-08-19 06:42:23,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:42:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1627 transitions. [2020-08-19 06:42:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 06:42:23,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:23,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:23,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:42:23,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash 502690489, now seen corresponding path program 1 times [2020-08-19 06:42:23,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:23,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377414956] [2020-08-19 06:42:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,887 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:42:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 06:42:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 06:42:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 06:42:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 06:42:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 06:42:24,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377414956] [2020-08-19 06:42:24,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:24,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:42:24,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849850078] [2020-08-19 06:42:24,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:42:24,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:24,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:42:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:42:24,141 INFO L87 Difference]: Start difference. First operand 1325 states and 1627 transitions. Second operand 12 states. [2020-08-19 06:42:24,694 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:24,898 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:25,116 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:25,840 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:26,076 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:26,314 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:27,502 INFO L93 Difference]: Finished difference Result 2441 states and 3101 transitions. [2020-08-19 06:42:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:42:27,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-08-19 06:42:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:27,512 INFO L225 Difference]: With dead ends: 2441 [2020-08-19 06:42:27,513 INFO L226 Difference]: Without dead ends: 1140 [2020-08-19 06:42:27,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:42:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-08-19 06:42:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1084. [2020-08-19 06:42:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-08-19 06:42:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1312 transitions. [2020-08-19 06:42:27,760 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1312 transitions. Word has length 146 [2020-08-19 06:42:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:27,761 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1312 transitions. [2020-08-19 06:42:27,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:42:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1312 transitions. [2020-08-19 06:42:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 06:42:27,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:27,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:27,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:42:27,765 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-19 06:42:27,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:27,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029973584] [2020-08-19 06:42:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,058 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:28,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:42:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:42:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:42:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:42:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 06:42:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 06:42:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 06:42:28,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029973584] [2020-08-19 06:42:28,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:28,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 06:42:28,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599933031] [2020-08-19 06:42:28,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:42:28,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:42:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:42:28,411 INFO L87 Difference]: Start difference. First operand 1084 states and 1312 transitions. Second operand 15 states. [2020-08-19 06:42:28,989 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:29,838 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:31,475 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:31,808 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:32,096 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:32,362 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:32,647 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:32,891 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:33,466 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 06:42:33,970 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 06:42:34,685 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:34,927 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:35,213 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:35,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:36,491 INFO L93 Difference]: Finished difference Result 3005 states and 3774 transitions. [2020-08-19 06:42:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 06:42:36,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-19 06:42:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:36,502 INFO L225 Difference]: With dead ends: 3005 [2020-08-19 06:42:36,502 INFO L226 Difference]: Without dead ends: 1945 [2020-08-19 06:42:36,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 06:42:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-08-19 06:42:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1843. [2020-08-19 06:42:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-19 06:42:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2184 transitions. [2020-08-19 06:42:36,826 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2184 transitions. Word has length 150 [2020-08-19 06:42:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:36,827 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2184 transitions. [2020-08-19 06:42:36,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:42:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2184 transitions. [2020-08-19 06:42:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 06:42:36,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:36,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:36,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:42:36,833 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-19 06:42:36,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:36,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273211888] [2020-08-19 06:42:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,110 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:42:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:42:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 06:42:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 06:42:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 06:42:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 06:42:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 06:42:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 06:42:37,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273211888] [2020-08-19 06:42:37,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:37,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 06:42:37,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171640739] [2020-08-19 06:42:37,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:42:37,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:42:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:42:37,271 INFO L87 Difference]: Start difference. First operand 1843 states and 2184 transitions. Second operand 11 states. [2020-08-19 06:42:37,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:39,655 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:39,931 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:40,181 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:42:40,537 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:40,849 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:42:41,260 INFO L93 Difference]: Finished difference Result 2160 states and 2739 transitions. [2020-08-19 06:42:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 06:42:41,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-19 06:42:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:42:41,271 INFO L225 Difference]: With dead ends: 2160 [2020-08-19 06:42:41,271 INFO L226 Difference]: Without dead ends: 2157 [2020-08-19 06:42:41,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-19 06:42:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-19 06:42:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1843. [2020-08-19 06:42:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-19 06:42:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2174 transitions. [2020-08-19 06:42:41,534 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2174 transitions. Word has length 154 [2020-08-19 06:42:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:42:41,534 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2174 transitions. [2020-08-19 06:42:41,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:42:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2174 transitions. [2020-08-19 06:42:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-19 06:42:41,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:42:41,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:41,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:42:41,541 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:42:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:42:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-19 06:42:41,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:42:41,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132766606] [2020-08-19 06:42:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:42:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,815 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:42:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:42:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:42:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:42:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:42:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:42:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:42:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:42:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:42:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:42:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:42:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:42:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:42:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:42:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:42:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:42:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 06:42:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 06:42:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:42:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 06:42:42,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132766606] [2020-08-19 06:42:42,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:42:42,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:42:42,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549861361] [2020-08-19 06:42:42,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:42:42,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:42:42,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:42:42,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:42:42,057 INFO L87 Difference]: Start difference. First operand 1843 states and 2174 transitions. Second operand 12 states. [2020-08-19 06:42:42,474 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:42:43,385 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:42:43,657 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:43,904 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:42:44,122 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:44,446 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:42:44,672 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188