/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:38:50,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:38:50,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:38:50,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:38:50,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:38:50,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:38:50,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:38:50,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:38:50,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:38:50,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:38:50,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:38:50,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:38:50,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:38:50,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:38:50,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:38:50,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:38:50,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:38:50,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:38:50,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:38:50,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:38:50,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:38:50,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:38:50,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:38:50,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:38:50,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:38:50,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:38:50,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:38:50,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:38:50,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:38:50,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:38:50,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:38:50,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:38:50,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:38:50,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:38:50,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:38:50,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:38:50,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:38:50,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:38:50,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:38:50,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:38:50,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:38:50,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:38:50,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:38:50,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:38:50,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:38:50,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:38:50,874 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:38:50,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:38:50,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:38:50,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:38:50,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:38:50,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:38:50,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:38:50,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:38:50,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:38:50,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:38:50,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:38:50,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:38:50,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:38:50,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:38:50,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:38:50,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:38:50,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:38:50,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:38:50,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:38:50,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:38:50,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:38:50,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:38:50,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:38:50,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:38:50,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:38:50,883 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:38:51,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:38:51,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:38:51,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:38:51,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:38:51,222 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:38:51,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-18 22:38:51,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b065814/1c8f1232ba99402490b396286a7734d2/FLAGe5a1b0159 [2020-08-18 22:38:51,750 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:38:51,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-18 22:38:51,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b065814/1c8f1232ba99402490b396286a7734d2/FLAGe5a1b0159 [2020-08-18 22:38:52,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b065814/1c8f1232ba99402490b396286a7734d2 [2020-08-18 22:38:52,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:38:52,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:38:52,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:38:52,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:38:52,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:38:52,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4339ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52, skipping insertion in model container [2020-08-18 22:38:52,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:38:52,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:38:52,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:38:52,602 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:38:52,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:38:52,774 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:38:52,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52 WrapperNode [2020-08-18 22:38:52,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:38:52,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:38:52,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:38:52,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:38:52,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... [2020-08-18 22:38:52,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:38:52,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:38:52,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:38:52,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:38:52,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:38:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:38:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:38:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:38:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:38:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:38:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:38:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:38:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:38:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:38:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:38:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:38:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:38:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 22:38:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:38:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:38:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:38:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:38:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:38:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:38:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:38:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 22:38:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:38:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:38:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:38:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:38:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:38:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 22:38:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 22:38:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 22:38:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:38:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:38:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:38:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:38:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:38:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 22:38:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:38:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:38:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:38:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:38:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:38:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:38:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 22:38:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:38:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:38:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:38:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:38:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:38:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 22:38:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 22:38:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:38:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:38:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:38:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:38:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 22:38:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:38:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:38:54,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:38:54,219 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:38:54,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:38:54 BoogieIcfgContainer [2020-08-18 22:38:54,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:38:54,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:38:54,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:38:54,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:38:54,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:38:52" (1/3) ... [2020-08-18 22:38:54,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff518eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:38:54, skipping insertion in model container [2020-08-18 22:38:54,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:38:52" (2/3) ... [2020-08-18 22:38:54,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff518eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:38:54, skipping insertion in model container [2020-08-18 22:38:54,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:38:54" (3/3) ... [2020-08-18 22:38:54,234 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-08-18 22:38:54,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:38:54,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:38:54,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:38:54,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:38:54,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:38:54,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:38:54,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:38:54,299 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:38:54,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:38:54,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:38:54,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:38:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-18 22:38:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 22:38:54,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:54,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:38:54,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:54,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:54,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2020-08-18 22:38:54,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:54,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012152012] [2020-08-18 22:38:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,066 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:55,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:38:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:38:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:38:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:38:55,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012152012] [2020-08-18 22:38:55,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:55,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:38:55,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588583647] [2020-08-18 22:38:55,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:38:55,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:55,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:38:55,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:38:55,254 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 4 states. [2020-08-18 22:38:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:38:56,508 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2020-08-18 22:38:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:38:56,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 22:38:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:38:56,528 INFO L225 Difference]: With dead ends: 341 [2020-08-18 22:38:56,528 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 22:38:56,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:38:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 22:38:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-18 22:38:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 22:38:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2020-08-18 22:38:56,646 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2020-08-18 22:38:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:38:56,647 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2020-08-18 22:38:56,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:38:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2020-08-18 22:38:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 22:38:56,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:38:56,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:38:56,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:38:56,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:38:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:38:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2020-08-18 22:38:56,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:38:56,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214969186] [2020-08-18 22:38:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:38:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,116 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:38:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:38:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:38:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:38:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:38:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:38:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:38:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:38:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:38:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:38:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:38:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:38:57,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214969186] [2020-08-18 22:38:57,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:38:57,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:38:57,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620487248] [2020-08-18 22:38:57,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:38:57,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:38:57,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:38:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:38:57,295 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 9 states. [2020-08-18 22:38:57,679 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:38:58,051 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:38:58,288 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:38:58,546 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:00,032 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2020-08-18 22:39:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:39:00,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 22:39:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:00,041 INFO L225 Difference]: With dead ends: 314 [2020-08-18 22:39:00,041 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 22:39:00,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:39:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 22:39:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-18 22:39:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 22:39:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-18 22:39:00,119 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2020-08-18 22:39:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:00,119 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-18 22:39:00,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:39:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-18 22:39:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 22:39:00,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:00,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:00,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:39:00,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:00,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2020-08-18 22:39:00,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:00,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010588431] [2020-08-18 22:39:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,406 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:39:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:39:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 22:39:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 22:39:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:00,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010588431] [2020-08-18 22:39:00,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:00,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:39:00,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113265990] [2020-08-18 22:39:00,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:39:00,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:00,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:39:00,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:39:00,544 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 7 states. [2020-08-18 22:39:00,871 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:02,343 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:03,123 INFO L93 Difference]: Finished difference Result 457 states and 594 transitions. [2020-08-18 22:39:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:39:03,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-18 22:39:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:03,130 INFO L225 Difference]: With dead ends: 457 [2020-08-18 22:39:03,130 INFO L226 Difference]: Without dead ends: 329 [2020-08-18 22:39:03,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:39:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-18 22:39:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2020-08-18 22:39:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 22:39:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-08-18 22:39:03,196 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 82 [2020-08-18 22:39:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:03,197 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-08-18 22:39:03,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:39:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-08-18 22:39:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 22:39:03,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:03,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:03,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:39:03,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:03,200 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2020-08-18 22:39:03,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:03,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492233231] [2020-08-18 22:39:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,482 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:39:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:39:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:39:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:39:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 22:39:03,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492233231] [2020-08-18 22:39:03,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:03,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:39:03,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583348849] [2020-08-18 22:39:03,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:39:03,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:39:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:39:03,612 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 9 states. [2020-08-18 22:39:03,971 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:04,590 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:05,336 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:05,658 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:06,092 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:06,344 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:07,055 INFO L93 Difference]: Finished difference Result 558 states and 704 transitions. [2020-08-18 22:39:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:39:07,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-18 22:39:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:07,060 INFO L225 Difference]: With dead ends: 558 [2020-08-18 22:39:07,060 INFO L226 Difference]: Without dead ends: 318 [2020-08-18 22:39:07,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:39:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-18 22:39:07,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 267. [2020-08-18 22:39:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-18 22:39:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 316 transitions. [2020-08-18 22:39:07,122 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 316 transitions. Word has length 96 [2020-08-18 22:39:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 316 transitions. [2020-08-18 22:39:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:39:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 316 transitions. [2020-08-18 22:39:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 22:39:07,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:07,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:07,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:39:07,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:07,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1863541240, now seen corresponding path program 1 times [2020-08-18 22:39:07,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:07,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742745918] [2020-08-18 22:39:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,474 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:07,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:39:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:39:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 22:39:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 22:39:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:07,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742745918] [2020-08-18 22:39:07,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:07,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:39:07,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5318020] [2020-08-18 22:39:07,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:39:07,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:39:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:39:07,632 INFO L87 Difference]: Start difference. First operand 267 states and 316 transitions. Second operand 10 states. [2020-08-18 22:39:08,236 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:08,903 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:09,175 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:09,420 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:09,648 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:10,553 INFO L93 Difference]: Finished difference Result 518 states and 636 transitions. [2020-08-18 22:39:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:39:10,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 22:39:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:10,559 INFO L225 Difference]: With dead ends: 518 [2020-08-18 22:39:10,560 INFO L226 Difference]: Without dead ends: 279 [2020-08-18 22:39:10,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:39:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-18 22:39:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-08-18 22:39:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 22:39:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2020-08-18 22:39:10,632 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 93 [2020-08-18 22:39:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:10,634 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2020-08-18 22:39:10,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:39:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2020-08-18 22:39:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 22:39:10,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:10,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:10,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:39:10,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:10,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2020-08-18 22:39:10,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:10,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830843964] [2020-08-18 22:39:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,933 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:39:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:39:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:39:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:39:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:11,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830843964] [2020-08-18 22:39:11,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:11,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:39:11,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659643303] [2020-08-18 22:39:11,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:39:11,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:11,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:39:11,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:39:11,104 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 11 states. [2020-08-18 22:39:11,644 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:11,882 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:12,118 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:12,835 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:13,096 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:13,343 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:14,314 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2020-08-18 22:39:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:39:14,315 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-18 22:39:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:14,317 INFO L225 Difference]: With dead ends: 500 [2020-08-18 22:39:14,318 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 22:39:14,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:39:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 22:39:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2020-08-18 22:39:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 22:39:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2020-08-18 22:39:14,363 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2020-08-18 22:39:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:14,363 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2020-08-18 22:39:14,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:39:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2020-08-18 22:39:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 22:39:14,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:14,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:14,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:39:14,365 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2020-08-18 22:39:14,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:14,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032164462] [2020-08-18 22:39:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,651 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:39:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:39:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:39:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 22:39:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:14,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032164462] [2020-08-18 22:39:14,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:14,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:39:14,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272387377] [2020-08-18 22:39:14,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:39:14,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:14,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:39:14,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:39:14,824 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 7 states. [2020-08-18 22:39:15,238 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:15,782 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:17,744 INFO L93 Difference]: Finished difference Result 679 states and 843 transitions. [2020-08-18 22:39:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:39:17,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-18 22:39:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:17,748 INFO L225 Difference]: With dead ends: 679 [2020-08-18 22:39:17,749 INFO L226 Difference]: Without dead ends: 461 [2020-08-18 22:39:17,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:39:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-18 22:39:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 423. [2020-08-18 22:39:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-18 22:39:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 494 transitions. [2020-08-18 22:39:17,838 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 494 transitions. Word has length 97 [2020-08-18 22:39:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:17,838 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 494 transitions. [2020-08-18 22:39:17,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:39:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 494 transitions. [2020-08-18 22:39:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-18 22:39:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:17,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:17,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:39:17,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:17,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2020-08-18 22:39:17,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:17,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124477380] [2020-08-18 22:39:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,191 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:39:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:39:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:39:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 22:39:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:39:18,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124477380] [2020-08-18 22:39:18,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:39:18,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:39:18,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051753699] [2020-08-18 22:39:18,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:39:18,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:18,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:39:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:39:18,363 INFO L87 Difference]: Start difference. First operand 423 states and 494 transitions. Second operand 12 states. [2020-08-18 22:39:18,774 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:19,430 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:20,530 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:20,834 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:21,093 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:21,369 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:21,622 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:22,904 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:23,177 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:23,947 INFO L93 Difference]: Finished difference Result 1166 states and 1447 transitions. [2020-08-18 22:39:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 22:39:23,948 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-18 22:39:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:23,954 INFO L225 Difference]: With dead ends: 1166 [2020-08-18 22:39:23,954 INFO L226 Difference]: Without dead ends: 846 [2020-08-18 22:39:23,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 22:39:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-08-18 22:39:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 733. [2020-08-18 22:39:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-18 22:39:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 847 transitions. [2020-08-18 22:39:24,094 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 847 transitions. Word has length 101 [2020-08-18 22:39:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:24,096 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 847 transitions. [2020-08-18 22:39:24,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:39:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 847 transitions. [2020-08-18 22:39:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 22:39:24,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:24,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:24,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:39:24,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2020-08-18 22:39:24,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:24,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5289597] [2020-08-18 22:39:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,550 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:39:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:39:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 22:39:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 22:39:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 22:39:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 22:39:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 22:39:24,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5289597] [2020-08-18 22:39:24,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:24,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 22:39:24,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837880224] [2020-08-18 22:39:24,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 22:39:24,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:24,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 22:39:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:39:24,919 INFO L87 Difference]: Start difference. First operand 733 states and 847 transitions. Second operand 16 states. [2020-08-18 22:39:25,853 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:26,365 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 22:39:26,645 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 22:39:26,911 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 22:39:27,573 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:27,856 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:39:28,234 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 22:39:28,923 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:29,268 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 22:39:30,040 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:30,543 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 22:39:30,850 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:31,386 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:31,789 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:32,415 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 22:39:32,696 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:39:33,384 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 22:39:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:33,895 INFO L93 Difference]: Finished difference Result 1574 states and 1876 transitions. [2020-08-18 22:39:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-18 22:39:33,895 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-18 22:39:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:33,901 INFO L225 Difference]: With dead ends: 1574 [2020-08-18 22:39:33,902 INFO L226 Difference]: Without dead ends: 940 [2020-08-18 22:39:33,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-18 22:39:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-18 22:39:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 861. [2020-08-18 22:39:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-08-18 22:39:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1005 transitions. [2020-08-18 22:39:34,058 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1005 transitions. Word has length 178 [2020-08-18 22:39:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:34,059 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1005 transitions. [2020-08-18 22:39:34,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 22:39:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1005 transitions. [2020-08-18 22:39:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-18 22:39:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:34,066 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:34,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:39:34,066 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2132607531, now seen corresponding path program 1 times [2020-08-18 22:39:34,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:34,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593919723] [2020-08-18 22:39:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,432 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:39:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:39:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 22:39:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 22:39:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:39:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 22:39:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 22:39:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 22:39:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-18 22:39:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-18 22:39:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-18 22:39:34,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593919723] [2020-08-18 22:39:34,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:34,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 22:39:34,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177207165] [2020-08-18 22:39:34,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:39:34,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:39:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:39:34,917 INFO L87 Difference]: Start difference. First operand 861 states and 1005 transitions. Second operand 15 states. [2020-08-18 22:39:36,159 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:39:36,869 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:37,370 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 22:39:37,862 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 22:39:38,096 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:38,358 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:38,597 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:38,825 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:40,300 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:41,807 INFO L93 Difference]: Finished difference Result 2247 states and 2712 transitions. [2020-08-18 22:39:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 22:39:41,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-18 22:39:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:41,819 INFO L225 Difference]: With dead ends: 2247 [2020-08-18 22:39:41,819 INFO L226 Difference]: Without dead ends: 1387 [2020-08-18 22:39:41,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 22:39:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-08-18 22:39:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1191. [2020-08-18 22:39:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-08-18 22:39:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1402 transitions. [2020-08-18 22:39:42,046 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1402 transitions. Word has length 301 [2020-08-18 22:39:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:42,046 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1402 transitions. [2020-08-18 22:39:42,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 22:39:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1402 transitions. [2020-08-18 22:39:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 22:39:42,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:42,054 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:42,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:39:42,054 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:42,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1264198018, now seen corresponding path program 1 times [2020-08-18 22:39:42,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:42,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060402683] [2020-08-18 22:39:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,406 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:39:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:39:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 22:39:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:39:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 22:39:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:39:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 22:39:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 22:39:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 22:39:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 22:39:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-18 22:39:42,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060402683] [2020-08-18 22:39:42,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:42,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 22:39:42,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585866774] [2020-08-18 22:39:42,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 22:39:42,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 22:39:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:39:42,837 INFO L87 Difference]: Start difference. First operand 1191 states and 1402 transitions. Second operand 16 states. [2020-08-18 22:39:43,331 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:43,657 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:39:43,911 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:44,151 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 22:39:44,777 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:45,573 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:39:45,946 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:46,215 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:46,764 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:47,759 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:48,017 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:39:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:39:48,418 INFO L93 Difference]: Finished difference Result 2264 states and 2700 transitions. [2020-08-18 22:39:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 22:39:48,419 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-08-18 22:39:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:39:48,430 INFO L225 Difference]: With dead ends: 2264 [2020-08-18 22:39:48,430 INFO L226 Difference]: Without dead ends: 1194 [2020-08-18 22:39:48,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 22:39:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-08-18 22:39:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1151. [2020-08-18 22:39:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-08-18 22:39:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1335 transitions. [2020-08-18 22:39:48,659 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1335 transitions. Word has length 303 [2020-08-18 22:39:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:39:48,660 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1335 transitions. [2020-08-18 22:39:48,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 22:39:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1335 transitions. [2020-08-18 22:39:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-18 22:39:48,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:39:48,666 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:39:48,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:39:48,666 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:39:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:39:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash -711568706, now seen corresponding path program 1 times [2020-08-18 22:39:48,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:39:48,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671329158] [2020-08-18 22:39:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:39:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,011 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:39:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:39:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:39:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:39:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:39:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:39:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:39:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 22:39:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:39:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:39:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:39:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 22:39:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:39:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 22:39:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:39:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:39:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:39:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:39:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 22:39:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-18 22:39:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:39:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 22:39:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:39:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:39:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 22:39:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 22:39:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:39:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-18 22:39:49,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671329158] [2020-08-18 22:39:49,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:39:49,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 22:39:49,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245176497] [2020-08-18 22:39:49,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 22:39:49,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:39:49,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 22:39:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:39:49,679 INFO L87 Difference]: Start difference. First operand 1151 states and 1335 transitions. Second operand 14 states. [2020-08-18 22:39:50,182 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189