/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:34:34,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:34:34,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:34:34,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:34:34,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:34:34,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:34:34,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:34:34,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:34:34,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:34:34,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:34:34,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:34:34,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:34:34,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:34:34,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:34:34,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:34:34,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:34:34,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:34:34,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:34:34,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:34:34,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:34:34,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:34:34,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:34:34,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:34:34,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:34:34,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:34:34,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:34:34,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:34:34,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:34:34,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:34:34,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:34:34,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:34:34,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:34:34,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:34:34,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:34:34,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:34:34,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:34:34,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:34:34,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:34:34,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:34:34,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:34:34,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:34:34,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:34:34,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:34:34,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:34:34,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:34:34,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:34:34,879 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:34:34,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:34:34,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:34:34,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:34:34,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:34:34,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:34:34,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:34:34,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:34:34,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:34:34,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:34:34,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:34:34,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:34:34,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:34:34,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:34:34,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:34:34,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:34:34,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:34:34,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:34:34,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:34:34,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:34:34,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:34:34,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:34:34,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:34:34,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:34:34,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:34:34,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:34:35,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:34:35,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:34:35,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:34:35,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:34:35,186 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:34:35,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 18:34:35,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03cf5af8f/4a2710ec20ac45a3bfa21d2a8c1e00cf/FLAGb15235d85 [2020-08-18 18:34:35,788 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:34:35,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 18:34:35,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03cf5af8f/4a2710ec20ac45a3bfa21d2a8c1e00cf/FLAGb15235d85 [2020-08-18 18:34:36,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03cf5af8f/4a2710ec20ac45a3bfa21d2a8c1e00cf [2020-08-18 18:34:36,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:34:36,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:34:36,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:34:36,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:34:36,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:34:36,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36, skipping insertion in model container [2020-08-18 18:34:36,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:34:36,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:34:36,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:34:36,626 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:34:36,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:34:36,784 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:34:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36 WrapperNode [2020-08-18 18:34:36,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:34:36,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:34:36,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:34:36,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:34:36,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... [2020-08-18 18:34:36,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:34:36,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:34:36,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:34:36,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:34:36,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:34:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:34:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:34:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:34:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:34:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:34:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:34:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:34:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 18:34:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:34:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:34:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:34:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:34:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:34:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:34:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:34:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:34:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:34:36,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:34:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:34:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:34:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:34:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:34:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:34:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:34:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:34:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:34:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:34:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:34:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:34:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:34:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:34:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:34:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:34:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:34:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:34:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:34:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:34:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:34:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:34:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:34:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:34:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:34:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:34:36,991 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:34:36,992 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:34:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:34:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:34:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:34:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:34:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:34:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 18:34:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:34:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:34:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:34:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:34:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:34:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:34:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:34:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:34:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:34:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:34:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:34:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:34:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:34:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:34:38,046 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:34:38,047 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:34:38,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:34:38 BoogieIcfgContainer [2020-08-18 18:34:38,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:34:38,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:34:38,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:34:38,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:34:38,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:34:36" (1/3) ... [2020-08-18 18:34:38,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa2f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:34:38, skipping insertion in model container [2020-08-18 18:34:38,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:36" (2/3) ... [2020-08-18 18:34:38,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fa2f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:34:38, skipping insertion in model container [2020-08-18 18:34:38,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:34:38" (3/3) ... [2020-08-18 18:34:38,062 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-18 18:34:38,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:34:38,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:34:38,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:34:38,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:34:38,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:34:38,121 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:34:38,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:34:38,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:34:38,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:34:38,122 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:34:38,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:34:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 18:34:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:34:38,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:38,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:38,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-18 18:34:38,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:38,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148430405] [2020-08-18 18:34:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,826 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:34:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:34:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:34:38,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148430405] [2020-08-18 18:34:38,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:38,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:34:38,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240280574] [2020-08-18 18:34:38,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:34:38,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:38,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:34:38,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:34:38,970 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 18:34:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:40,180 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-18 18:34:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:34:40,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:34:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:40,198 INFO L225 Difference]: With dead ends: 343 [2020-08-18 18:34:40,198 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 18:34:40,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:34:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 18:34:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-18 18:34:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 18:34:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-18 18:34:40,302 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-18 18:34:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:40,302 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-18 18:34:40,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:34:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-18 18:34:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:34:40,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:40,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:40,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:34:40,307 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-18 18:34:40,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:40,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539489380] [2020-08-18 18:34:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,640 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:34:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:34:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:34:40,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539489380] [2020-08-18 18:34:40,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:40,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:34:40,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668826804] [2020-08-18 18:34:40,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:34:40,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:34:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:34:40,687 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-18 18:34:41,081 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:41,968 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-18 18:34:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:34:41,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:34:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:41,973 INFO L225 Difference]: With dead ends: 270 [2020-08-18 18:34:41,974 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 18:34:41,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:34:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 18:34:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-18 18:34:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 18:34:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-18 18:34:42,021 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-18 18:34:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:42,022 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-18 18:34:42,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:34:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-18 18:34:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:34:42,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:42,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:42,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:34:42,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:42,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:42,025 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-18 18:34:42,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:42,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819831453] [2020-08-18 18:34:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,347 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:34:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:34:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:34:42,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819831453] [2020-08-18 18:34:42,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:42,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:34:42,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684744750] [2020-08-18 18:34:42,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:34:42,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:34:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:34:42,484 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-18 18:34:42,819 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:43,135 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:43,378 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:43,612 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:44,367 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:46,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:46,410 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-18 18:34:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:34:46,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 18:34:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:46,420 INFO L225 Difference]: With dead ends: 476 [2020-08-18 18:34:46,420 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 18:34:46,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:34:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 18:34:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-18 18:34:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-18 18:34:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-18 18:34:46,500 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-18 18:34:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:46,500 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-18 18:34:46,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:34:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-18 18:34:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:34:46,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:46,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:46,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:34:46,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:46,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-18 18:34:46,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:46,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828433819] [2020-08-18 18:34:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,807 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:46,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:34:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:34:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:34:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:34:46,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828433819] [2020-08-18 18:34:46,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:46,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:34:46,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228334489] [2020-08-18 18:34:46,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:34:46,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:46,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:34:46,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:34:46,982 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-18 18:34:47,378 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:47,720 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:47,987 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:48,232 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:48,766 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:49,593 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:49,952 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:50,339 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:50,584 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:50,844 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:51,197 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:51,543 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:51,921 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:53,942 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-18 18:34:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 18:34:53,942 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 18:34:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:53,953 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 18:34:53,953 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 18:34:53,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 18:34:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 18:34:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-18 18:34:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-18 18:34:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-18 18:34:54,158 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-18 18:34:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:54,159 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-18 18:34:54,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:34:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-18 18:34:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 18:34:54,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:54,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:54,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:34:54,165 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-18 18:34:54,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:54,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701514470] [2020-08-18 18:34:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,445 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:54,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:34:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:34:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:34:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:34:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:34:54,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701514470] [2020-08-18 18:34:54,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:54,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:34:54,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509052034] [2020-08-18 18:34:54,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:34:54,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:54,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:34:54,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:34:54,560 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-18 18:34:54,975 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:56,926 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-18 18:34:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:34:56,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 18:34:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:56,935 INFO L225 Difference]: With dead ends: 1979 [2020-08-18 18:34:56,935 INFO L226 Difference]: Without dead ends: 1161 [2020-08-18 18:34:56,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:34:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-18 18:34:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-18 18:34:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-18 18:34:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-18 18:34:57,251 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-18 18:34:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:57,251 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-18 18:34:57,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:34:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-18 18:34:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:34:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:57,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:57,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:34:57,257 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:57,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-18 18:34:57,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:57,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503154431] [2020-08-18 18:34:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,699 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:34:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:34:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:34:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 18:34:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 18:34:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 18:34:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 18:34:57,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503154431] [2020-08-18 18:34:57,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:57,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:34:57,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205066806] [2020-08-18 18:34:57,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:34:57,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:57,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:34:57,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:34:57,884 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-18 18:34:58,564 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 18:34:59,136 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:01,325 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:03,285 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-18 18:35:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 18:35:03,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 18:35:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:03,295 INFO L225 Difference]: With dead ends: 2051 [2020-08-18 18:35:03,295 INFO L226 Difference]: Without dead ends: 1278 [2020-08-18 18:35:03,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 18:35:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-18 18:35:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-18 18:35:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-18 18:35:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-18 18:35:03,565 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-18 18:35:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:03,567 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-18 18:35:03,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:35:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-18 18:35:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 18:35:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:03,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:03,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:35:03,576 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:03,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1802078625, now seen corresponding path program 1 times [2020-08-18 18:35:03,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:03,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918324036] [2020-08-18 18:35:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,829 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:35:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:35:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:35:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:35:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 18:35:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 18:35:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:35:04,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918324036] [2020-08-18 18:35:04,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:04,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 18:35:04,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101721533] [2020-08-18 18:35:04,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:35:04,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:35:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:35:04,028 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 9 states. [2020-08-18 18:35:04,957 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:05,181 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:05,443 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:06,635 INFO L93 Difference]: Finished difference Result 2161 states and 2784 transitions. [2020-08-18 18:35:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:35:06,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-08-18 18:35:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:06,644 INFO L225 Difference]: With dead ends: 2161 [2020-08-18 18:35:06,644 INFO L226 Difference]: Without dead ends: 1304 [2020-08-18 18:35:06,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:35:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-18 18:35:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1181. [2020-08-18 18:35:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-18 18:35:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1449 transitions. [2020-08-18 18:35:06,886 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1449 transitions. Word has length 147 [2020-08-18 18:35:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:06,887 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1449 transitions. [2020-08-18 18:35:06,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:35:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1449 transitions. [2020-08-18 18:35:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 18:35:06,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:06,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:06,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:35:06,892 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-18 18:35:06,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:06,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863416720] [2020-08-18 18:35:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,143 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:35:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:35:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:35:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:35:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 18:35:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 18:35:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 18:35:07,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863416720] [2020-08-18 18:35:07,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:07,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:35:07,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896243166] [2020-08-18 18:35:07,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:35:07,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:35:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:35:07,351 INFO L87 Difference]: Start difference. First operand 1181 states and 1449 transitions. Second operand 10 states. [2020-08-18 18:35:09,138 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:09,373 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:35:09,605 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:09,841 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:10,357 INFO L93 Difference]: Finished difference Result 2179 states and 2756 transitions. [2020-08-18 18:35:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:35:10,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 18:35:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:10,366 INFO L225 Difference]: With dead ends: 2179 [2020-08-18 18:35:10,366 INFO L226 Difference]: Without dead ends: 1328 [2020-08-18 18:35:10,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:35:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-08-18 18:35:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1217. [2020-08-18 18:35:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-18 18:35:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1497 transitions. [2020-08-18 18:35:10,581 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1497 transitions. Word has length 147 [2020-08-18 18:35:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:10,582 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1497 transitions. [2020-08-18 18:35:10,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:35:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1497 transitions. [2020-08-18 18:35:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 18:35:10,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:10,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:10,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:35:10,587 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash -188398406, now seen corresponding path program 1 times [2020-08-18 18:35:10,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:10,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463156049] [2020-08-18 18:35:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,833 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:35:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:35:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:35:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:11,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 18:35:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 18:35:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:35:11,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463156049] [2020-08-18 18:35:11,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:11,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:35:11,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951699955] [2020-08-18 18:35:11,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:35:11,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:11,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:35:11,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:35:11,035 INFO L87 Difference]: Start difference. First operand 1217 states and 1497 transitions. Second operand 10 states. [2020-08-18 18:35:12,228 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:12,490 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:35:12,792 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:13,050 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:14,081 INFO L93 Difference]: Finished difference Result 2553 states and 3294 transitions. [2020-08-18 18:35:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:35:14,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-18 18:35:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:14,096 INFO L225 Difference]: With dead ends: 2553 [2020-08-18 18:35:14,096 INFO L226 Difference]: Without dead ends: 1360 [2020-08-18 18:35:14,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:35:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-08-18 18:35:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1237. [2020-08-18 18:35:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-08-18 18:35:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1519 transitions. [2020-08-18 18:35:14,345 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1519 transitions. Word has length 143 [2020-08-18 18:35:14,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:14,346 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1519 transitions. [2020-08-18 18:35:14,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:35:14,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1519 transitions. [2020-08-18 18:35:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 18:35:14,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:14,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:14,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:35:14,353 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:14,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1807373320, now seen corresponding path program 1 times [2020-08-18 18:35:14,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:14,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795453322] [2020-08-18 18:35:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,713 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:35:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:35:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 18:35:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 18:35:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 18:35:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:35:14,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795453322] [2020-08-18 18:35:14,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:14,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:35:14,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073150126] [2020-08-18 18:35:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:35:14,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:14,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:35:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:35:14,967 INFO L87 Difference]: Start difference. First operand 1237 states and 1519 transitions. Second operand 12 states. [2020-08-18 18:35:15,703 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:16,040 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:16,386 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:17,179 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:17,447 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:17,708 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:18,857 INFO L93 Difference]: Finished difference Result 2269 states and 2873 transitions. [2020-08-18 18:35:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:35:18,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-18 18:35:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:18,864 INFO L225 Difference]: With dead ends: 2269 [2020-08-18 18:35:18,864 INFO L226 Difference]: Without dead ends: 1056 [2020-08-18 18:35:18,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:35:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-18 18:35:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1000. [2020-08-18 18:35:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-08-18 18:35:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1204 transitions. [2020-08-18 18:35:19,048 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1204 transitions. Word has length 143 [2020-08-18 18:35:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:19,049 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1204 transitions. [2020-08-18 18:35:19,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:35:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1204 transitions. [2020-08-18 18:35:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 18:35:19,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:19,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:19,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:35:19,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:19,056 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-18 18:35:19,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:19,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809921125] [2020-08-18 18:35:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,365 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:35:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:35:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:35:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:35:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 18:35:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 18:35:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 18:35:19,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809921125] [2020-08-18 18:35:19,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:19,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:35:19,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186466094] [2020-08-18 18:35:19,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:35:19,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:35:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:35:19,510 INFO L87 Difference]: Start difference. First operand 1000 states and 1204 transitions. Second operand 10 states. [2020-08-18 18:35:19,960 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:21,772 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:22,045 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:22,284 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:22,564 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:22,846 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:35:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:23,300 INFO L93 Difference]: Finished difference Result 1077 states and 1322 transitions. [2020-08-18 18:35:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:35:23,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 18:35:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:23,308 INFO L225 Difference]: With dead ends: 1077 [2020-08-18 18:35:23,308 INFO L226 Difference]: Without dead ends: 1074 [2020-08-18 18:35:23,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:35:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-08-18 18:35:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1000. [2020-08-18 18:35:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-08-18 18:35:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1199 transitions. [2020-08-18 18:35:23,491 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1199 transitions. Word has length 147 [2020-08-18 18:35:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:23,491 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1199 transitions. [2020-08-18 18:35:23,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:35:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1199 transitions. [2020-08-18 18:35:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 18:35:23,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:23,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:23,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:35:23,497 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:23,497 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-18 18:35:23,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:23,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846032399] [2020-08-18 18:35:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,800 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:35:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:35:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 18:35:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:35:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:23,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 18:35:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 18:35:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 18:35:24,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846032399] [2020-08-18 18:35:24,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:24,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:35:24,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403886261] [2020-08-18 18:35:24,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:35:24,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:24,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:35:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:35:24,061 INFO L87 Difference]: Start difference. First operand 1000 states and 1199 transitions. Second operand 12 states. [2020-08-18 18:35:24,482 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:25,121 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:25,655 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:25,933 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:26,201 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:26,448 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:35:26,741 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:35:27,008 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:35:28,802 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:29,597 INFO L93 Difference]: Finished difference Result 2405 states and 3114 transitions. [2020-08-18 18:35:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 18:35:29,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-18 18:35:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:29,607 INFO L225 Difference]: With dead ends: 2405 [2020-08-18 18:35:29,607 INFO L226 Difference]: Without dead ends: 1584 [2020-08-18 18:35:29,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 18:35:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-08-18 18:35:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1334. [2020-08-18 18:35:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-08-18 18:35:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1633 transitions. [2020-08-18 18:35:29,845 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1633 transitions. Word has length 151 [2020-08-18 18:35:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:29,845 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1633 transitions. [2020-08-18 18:35:29,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:35:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1633 transitions. [2020-08-18 18:35:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-18 18:35:29,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:29,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:29,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:35:29,851 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:29,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-18 18:35:29,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:29,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208815871] [2020-08-18 18:35:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,193 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:35:30,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:35:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:35:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:35:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:35:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:35:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:35:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 18:35:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:35:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 18:35:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 18:35:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:35:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-18 18:35:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 18:35:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 18:35:30,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208815871] [2020-08-18 18:35:30,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:30,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 18:35:30,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056441023] [2020-08-18 18:35:30,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 18:35:30,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 18:35:30,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:35:30,567 INFO L87 Difference]: Start difference. First operand 1334 states and 1633 transitions. Second operand 13 states. [2020-08-18 18:35:31,697 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:35:31,976 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186