/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:54:27,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:54:27,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:54:27,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:54:27,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:54:27,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:54:27,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:54:27,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:54:27,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:54:27,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:54:27,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:54:27,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:54:27,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:54:27,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:54:27,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:54:27,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:54:27,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:54:27,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:54:27,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:54:27,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:54:27,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:54:27,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:54:27,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:54:27,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:54:27,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:54:27,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:54:27,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:54:27,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:54:27,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:54:27,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:54:27,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:54:27,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:54:27,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:54:27,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:54:27,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:54:27,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:54:27,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:54:27,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:54:27,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:54:27,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:54:27,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:54:27,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:54:27,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:54:27,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:54:27,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:54:27,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:54:27,940 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:54:27,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:54:27,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:54:27,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:54:27,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:54:27,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:54:27,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:54:27,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:54:27,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:54:27,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:54:27,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:54:27,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:54:27,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:54:27,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:54:27,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:54:27,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:54:27,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:54:27,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:54:27,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:54:27,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:54:27,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:54:27,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:54:27,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:54:27,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:54:27,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:54:27,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:54:28,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:54:28,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:54:28,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:54:28,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:54:28,280 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:54:28,281 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 22:54:28,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d1a32732/ec33fc2b3b9f4a84a38f8cfe3e0d10ad/FLAG9083a099a [2020-08-21 22:54:28,791 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:54:28,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 22:54:28,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d1a32732/ec33fc2b3b9f4a84a38f8cfe3e0d10ad/FLAG9083a099a [2020-08-21 22:54:29,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d1a32732/ec33fc2b3b9f4a84a38f8cfe3e0d10ad [2020-08-21 22:54:29,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:54:29,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:54:29,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:29,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:54:29,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:54:29,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40150f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29, skipping insertion in model container [2020-08-21 22:54:29,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:54:29,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:54:29,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:29,632 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:54:29,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:54:29,763 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:54:29,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29 WrapperNode [2020-08-21 22:54:29,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:54:29,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:54:29,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:54:29,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:54:29,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... [2020-08-21 22:54:29,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:54:29,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:54:29,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:54:29,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:54:29,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:54:29,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:54:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:54:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:54:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:54:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:54:29,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:54:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:54:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:54:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:54:29,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:29,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:29,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:54:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:54:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:54:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:54:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:54:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:54:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:54:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:54:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:54:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:54:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:54:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:54:31,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:54:31,008 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:54:31,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:31 BoogieIcfgContainer [2020-08-21 22:54:31,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:54:31,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:54:31,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:54:31,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:54:31,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:54:29" (1/3) ... [2020-08-21 22:54:31,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a65aec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:31, skipping insertion in model container [2020-08-21 22:54:31,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:54:29" (2/3) ... [2020-08-21 22:54:31,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a65aec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:54:31, skipping insertion in model container [2020-08-21 22:54:31,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:54:31" (3/3) ... [2020-08-21 22:54:31,021 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-21 22:54:31,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:54:31,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:54:31,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:54:31,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:54:31,071 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:54:31,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:54:31,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:54:31,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:54:31,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:54:31,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:54:31,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:54:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 22:54:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:54:31,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:31,104 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] [2020-08-21 22:54:31,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-21 22:54:31,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:31,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917745058] [2020-08-21 22:54:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,782 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:31,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:54:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:54:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:54:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:31,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917745058] [2020-08-21 22:54:31,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:31,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:54:31,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193053091] [2020-08-21 22:54:31,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:54:31,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:31,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:54:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:54:31,927 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-21 22:54:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:33,102 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-21 22:54:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:54:33,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:54:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:33,118 INFO L225 Difference]: With dead ends: 303 [2020-08-21 22:54:33,118 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:54:33,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:54:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:54:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 22:54:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 22:54:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-21 22:54:33,210 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-21 22:54:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:33,211 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-21 22:54:33,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:54:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-21 22:54:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:54:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:33,216 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] [2020-08-21 22:54:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:54:33,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-21 22:54:33,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:33,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945824683] [2020-08-21 22:54:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,537 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:54:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:54:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:54:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:33,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945824683] [2020-08-21 22:54:33,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:33,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:54:33,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547230278] [2020-08-21 22:54:33,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:54:33,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:54:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:54:33,597 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-21 22:54:34,030 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:34,736 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-21 22:54:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:54:34,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 22:54:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:34,741 INFO L225 Difference]: With dead ends: 248 [2020-08-21 22:54:34,741 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 22:54:34,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:54:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 22:54:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 22:54:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 22:54:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-21 22:54:34,778 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-21 22:54:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:34,778 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-21 22:54:34,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:54:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-21 22:54:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 22:54:34,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:34,781 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] [2020-08-21 22:54:34,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:54:34,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-21 22:54:34,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:34,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267676826] [2020-08-21 22:54:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,094 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:54:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:54:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:35,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267676826] [2020-08-21 22:54:35,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:35,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:35,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763325259] [2020-08-21 22:54:35,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:35,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:35,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:35,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:35,237 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-21 22:54:35,666 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:35,955 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:36,212 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:36,477 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:37,573 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-21 22:54:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:54:37,574 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 22:54:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:37,576 INFO L225 Difference]: With dead ends: 257 [2020-08-21 22:54:37,577 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 22:54:37,581 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 [2020-08-21 22:54:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 22:54:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 22:54:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 22:54:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-21 22:54:37,637 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-21 22:54:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:37,640 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-21 22:54:37,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-21 22:54:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 22:54:37,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:37,650 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] [2020-08-21 22:54:37,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:54:37,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-21 22:54:37,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:37,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883598094] [2020-08-21 22:54:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,000 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:54:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 22:54:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 22:54:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:38,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883598094] [2020-08-21 22:54:38,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:38,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:54:38,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938062706] [2020-08-21 22:54:38,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:54:38,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:54:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:54:38,155 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-21 22:54:38,480 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:39,730 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:40,245 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-21 22:54:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:54:40,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 22:54:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:40,250 INFO L225 Difference]: With dead ends: 356 [2020-08-21 22:54:40,251 INFO L226 Difference]: Without dead ends: 255 [2020-08-21 22:54:40,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:54:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-21 22:54:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-21 22:54:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-21 22:54:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-21 22:54:40,295 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-21 22:54:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:40,295 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-21 22:54:40,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:54:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-21 22:54:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 22:54:40,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:40,297 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] [2020-08-21 22:54:40,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:54:40,298 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-21 22:54:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254370245] [2020-08-21 22:54:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,579 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:54:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:54:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 22:54:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:54:40,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254370245] [2020-08-21 22:54:40,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:40,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:40,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624118383] [2020-08-21 22:54:40,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:40,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:40,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:40,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:40,690 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-21 22:54:41,223 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:41,833 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:42,451 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:42,765 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:43,157 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:43,389 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:43,886 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-21 22:54:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:54:43,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 22:54:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:43,889 INFO L225 Difference]: With dead ends: 438 [2020-08-21 22:54:43,889 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 22:54:43,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:54:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 22:54:43,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-21 22:54:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-21 22:54:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-21 22:54:43,932 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-21 22:54:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:43,933 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-21 22:54:43,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-21 22:54:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 22:54:43,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:43,935 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] [2020-08-21 22:54:43,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:54:43,935 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-21 22:54:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:43,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127724413] [2020-08-21 22:54:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,238 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:54:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 22:54:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:54:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:44,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127724413] [2020-08-21 22:54:44,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:44,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:54:44,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493035058] [2020-08-21 22:54:44,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:54:44,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:44,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:54:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:54:44,385 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-21 22:54:45,353 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:45,594 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:54:45,824 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:46,071 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:46,695 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-21 22:54:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:54:46,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 22:54:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:46,701 INFO L225 Difference]: With dead ends: 436 [2020-08-21 22:54:46,701 INFO L226 Difference]: Without dead ends: 253 [2020-08-21 22:54:46,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:54:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-21 22:54:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-21 22:54:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 22:54:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-21 22:54:46,756 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-21 22:54:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:46,757 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-21 22:54:46,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:54:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-21 22:54:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 22:54:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:46,761 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] [2020-08-21 22:54:46,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:54:46,761 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-21 22:54:46,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:46,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868514610] [2020-08-21 22:54:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,018 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:54:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 22:54:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:54:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:47,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868514610] [2020-08-21 22:54:47,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:47,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:54:47,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680911331] [2020-08-21 22:54:47,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:54:47,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:47,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:54:47,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:54:47,183 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-21 22:54:48,020 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:48,285 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:48,539 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:49,159 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:49,410 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:49,642 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:50,373 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-21 22:54:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:54:50,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 22:54:50,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:50,378 INFO L225 Difference]: With dead ends: 448 [2020-08-21 22:54:50,379 INFO L226 Difference]: Without dead ends: 260 [2020-08-21 22:54:50,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:54:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-21 22:54:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-21 22:54:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 22:54:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-21 22:54:50,418 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-21 22:54:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:50,418 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-21 22:54:50,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:54:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-21 22:54:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 22:54:50,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:50,420 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] [2020-08-21 22:54:50,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:54:50,420 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:50,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-21 22:54:50,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:50,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803442886] [2020-08-21 22:54:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,688 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:54:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:54:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 22:54:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:54:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:50,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803442886] [2020-08-21 22:54:50,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:50,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:54:50,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770259499] [2020-08-21 22:54:50,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:54:50,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:54:50,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:54:50,809 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-21 22:54:51,134 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:51,650 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:53,155 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-21 22:54:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:54:53,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 22:54:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:53,159 INFO L225 Difference]: With dead ends: 617 [2020-08-21 22:54:53,159 INFO L226 Difference]: Without dead ends: 425 [2020-08-21 22:54:53,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:54:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-21 22:54:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-21 22:54:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 22:54:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-21 22:54:53,229 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-21 22:54:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:53,229 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-21 22:54:53,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:54:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-21 22:54:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 22:54:53,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:53,231 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] [2020-08-21 22:54:53,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:54:53,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-21 22:54:53,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:53,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747984098] [2020-08-21 22:54:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,542 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:54:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:54:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:54:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 22:54:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 22:54:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:54:53,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747984098] [2020-08-21 22:54:53,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:54:53,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:54:53,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167456455] [2020-08-21 22:54:53,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:54:53,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:54:53,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:54:53,712 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-21 22:54:54,742 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:55,320 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:56,247 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:56,558 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:56,799 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:54:57,049 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:57,298 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:54:58,365 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:54:58,621 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:54:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:54:59,124 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-21 22:54:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 22:54:59,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 22:54:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:54:59,130 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 22:54:59,130 INFO L226 Difference]: Without dead ends: 776 [2020-08-21 22:54:59,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 22:54:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-21 22:54:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-21 22:54:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-21 22:54:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-21 22:54:59,254 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-21 22:54:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:54:59,255 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-21 22:54:59,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:54:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-21 22:54:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 22:54:59,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:54:59,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:54:59,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:54:59,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:54:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:54:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-21 22:54:59,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:54:59,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709092490] [2020-08-21 22:54:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:54:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,537 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:54:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:54:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:54:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:54:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:54:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:54:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:54:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:54:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:54:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:54:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:54:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 22:54:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:54:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 22:54:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 22:54:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:54:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:54:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:54:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 22:54:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 22:54:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:54:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 22:54:59,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709092490] [2020-08-21 22:54:59,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:54:59,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:54:59,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994410650] [2020-08-21 22:54:59,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:54:59,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:54:59,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:54:59,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:54:59,840 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-21 22:55:00,588 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:01,061 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:01,338 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:01,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 22:55:02,163 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:02,444 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:03,236 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:03,564 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:04,425 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:04,686 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:04,973 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:05,265 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:05,819 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:06,180 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:06,545 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:07,155 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:07,428 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:08,070 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-21 22:55:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 22:55:08,071 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 22:55:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:08,080 INFO L225 Difference]: With dead ends: 1445 [2020-08-21 22:55:08,080 INFO L226 Difference]: Without dead ends: 873 [2020-08-21 22:55:08,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 22:55:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-21 22:55:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-21 22:55:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 22:55:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-21 22:55:08,219 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-21 22:55:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:08,221 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-21 22:55:08,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 22:55:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-21 22:55:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-21 22:55:08,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:08,228 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, 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] [2020-08-21 22:55:08,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:55:08,228 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:08,229 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-21 22:55:08,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:08,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968177852] [2020-08-21 22:55:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,594 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:55:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 22:55:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 22:55:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 22:55:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 22:55:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 22:55:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-21 22:55:09,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968177852] [2020-08-21 22:55:09,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:09,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:55:09,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445337277] [2020-08-21 22:55:09,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:55:09,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:09,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:55:09,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:09,046 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-21 22:55:10,471 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:10,720 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:10,952 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:11,180 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:12,449 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:13,085 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-21 22:55:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:55:13,086 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-21 22:55:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:13,096 INFO L225 Difference]: With dead ends: 2078 [2020-08-21 22:55:13,096 INFO L226 Difference]: Without dead ends: 1225 [2020-08-21 22:55:13,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:55:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-21 22:55:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-21 22:55:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-21 22:55:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-21 22:55:13,255 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-21 22:55:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:13,255 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-21 22:55:13,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:55:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-21 22:55:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 22:55:13,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:13,262 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, 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] [2020-08-21 22:55:13,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:55:13,262 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:13,262 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-21 22:55:13,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:13,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444914689] [2020-08-21 22:55:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,592 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:55:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:55:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 22:55:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-21 22:55:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 22:55:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 22:55:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 22:55:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 22:55:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-21 22:55:13,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444914689] [2020-08-21 22:55:13,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:13,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 22:55:13,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745168609] [2020-08-21 22:55:13,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 22:55:13,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:13,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 22:55:13,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:55:13,979 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-21 22:55:14,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:14,922 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:15,169 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:15,405 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:55:16,010 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:16,729 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:17,064 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:17,322 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:17,885 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:18,624 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:18,858 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:19,316 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-21 22:55:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 22:55:19,319 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 22:55:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:19,325 INFO L225 Difference]: With dead ends: 1968 [2020-08-21 22:55:19,325 INFO L226 Difference]: Without dead ends: 1042 [2020-08-21 22:55:19,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 22:55:19,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-21 22:55:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-21 22:55:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-21 22:55:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-21 22:55:19,496 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-21 22:55:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:19,496 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-21 22:55:19,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 22:55:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-21 22:55:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-21 22:55:19,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:19,501 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, 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] [2020-08-21 22:55:19,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:55:19,502 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-21 22:55:19,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:19,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587859759] [2020-08-21 22:55:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,845 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:19,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:55:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:55:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 22:55:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 22:55:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 22:55:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 22:55:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-21 22:55:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-21 22:55:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-21 22:55:20,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587859759] [2020-08-21 22:55:20,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:20,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 22:55:20,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442229771] [2020-08-21 22:55:20,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:55:20,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:20,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:55:20,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:55:20,103 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-21 22:55:21,581 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:55:21,818 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:55:22,052 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:22,278 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:55:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:55:22,636 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-21 22:55:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:55:22,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-21 22:55:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:55:22,643 INFO L225 Difference]: With dead ends: 1920 [2020-08-21 22:55:22,643 INFO L226 Difference]: Without dead ends: 1034 [2020-08-21 22:55:22,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:55:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-21 22:55:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-21 22:55:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-21 22:55:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-21 22:55:22,813 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-21 22:55:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:55:22,815 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-21 22:55:22,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:55:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-21 22:55:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 22:55:22,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:55:22,819 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, 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] [2020-08-21 22:55:22,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:55:22,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:55:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:55:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-21 22:55:22,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:55:22,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968567094] [2020-08-21 22:55:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:55:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,135 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:55:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:55:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:55:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:55:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:55:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:55:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 22:55:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:55:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:55:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:55:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:55:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 22:55:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:55:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:55:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:55:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:55:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-21 22:55:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:55:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 22:55:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:55:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:55:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:55:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-21 22:55:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-21 22:55:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:55:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-21 22:55:23,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968567094] [2020-08-21 22:55:23,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:55:23,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:55:23,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343611385] [2020-08-21 22:55:23,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:55:23,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:55:23,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:55:23,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:55:23,685 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states. [2020-08-21 22:55:24,378 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:25,426 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:55:26,088 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192