/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:05:03,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:05:03,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:05:03,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:05:03,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:05:03,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:05:03,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:05:03,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:05:03,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:05:03,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:05:03,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:05:03,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:05:03,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:05:03,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:05:03,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:05:03,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:05:03,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:05:03,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:05:03,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:05:03,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:05:03,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:05:03,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:05:03,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:05:03,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:05:03,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:05:03,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:05:03,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:05:03,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:05:03,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:05:03,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:05:03,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:05:03,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:05:03,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:05:03,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:05:03,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:05:03,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:05:03,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:05:03,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:05:03,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:05:03,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:05:03,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:05:03,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:05:03,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:05:03,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:05:03,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:05:03,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:05:03,875 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:05:03,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:05:03,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:05:03,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:05:03,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:05:03,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:05:03,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:05:03,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:05:03,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:05:03,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:05:03,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:05:03,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:05:03,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:05:03,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:05:03,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:05:03,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:05:03,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:05:03,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:03,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:05:03,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:05:03,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:05:03,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:05:03,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:05:03,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:05:03,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:05:03,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:05:04,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:05:04,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:05:04,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:05:04,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:05:04,216 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:05:04,217 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2020-08-21 18:05:04,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf65aeb38/cacf9cf2270f49eb881b0033a1df1803/FLAG4fbd54ff4 [2020-08-21 18:05:04,821 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:05:04,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2020-08-21 18:05:04,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf65aeb38/cacf9cf2270f49eb881b0033a1df1803/FLAG4fbd54ff4 [2020-08-21 18:05:05,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf65aeb38/cacf9cf2270f49eb881b0033a1df1803 [2020-08-21 18:05:05,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:05:05,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:05:05,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:05,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:05:05,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:05:05,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05, skipping insertion in model container [2020-08-21 18:05:05,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:05:05,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:05:05,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:05,597 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:05:05,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:05,859 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:05:05,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05 WrapperNode [2020-08-21 18:05:05,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:05,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:05:05,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:05:05,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:05:05,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... [2020-08-21 18:05:05,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:05:05,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:05:05,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:05:05,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:05:05,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:05:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:05:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:05:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:05:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:05:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:05:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:05:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:05:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:05:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:05:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 18:05:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:05:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 18:05:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:05:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:05:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:05:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:05:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:05:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:05:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:05:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:05:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:05:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:05:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:05:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:05:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:05:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:05:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:05:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:05:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:05:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:05:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:05:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:05:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:05:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:05:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:05:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 18:05:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 18:05:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 18:05:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:05:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:05:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:05:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:05:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:05:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:05:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:05:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:05:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:05:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 18:05:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:05:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 18:05:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:05:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:05:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:05:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:05:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:05:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:05:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:05:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:05:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:05:06,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:05:07,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:05:07,114 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:05:07,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:07 BoogieIcfgContainer [2020-08-21 18:05:07,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:05:07,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:05:07,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:05:07,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:05:07,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:05:05" (1/3) ... [2020-08-21 18:05:07,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d5cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:07, skipping insertion in model container [2020-08-21 18:05:07,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:05" (2/3) ... [2020-08-21 18:05:07,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246d5cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:07, skipping insertion in model container [2020-08-21 18:05:07,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:07" (3/3) ... [2020-08-21 18:05:07,128 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2020-08-21 18:05:07,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:05:07,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:05:07,164 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:05:07,190 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:05:07,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:05:07,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:05:07,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:05:07,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:05:07,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:05:07,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:05:07,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:05:07,215 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-08-21 18:05:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:05:07,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:07,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:07,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash -304783320, now seen corresponding path program 1 times [2020-08-21 18:05:07,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:07,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204426962] [2020-08-21 18:05:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,898 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:05:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:05:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:05:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:08,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204426962] [2020-08-21 18:05:08,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:08,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:05:08,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657279193] [2020-08-21 18:05:08,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:05:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:08,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:05:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:08,065 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-08-21 18:05:09,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:09,479 INFO L93 Difference]: Finished difference Result 382 states and 489 transitions. [2020-08-21 18:05:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:05:09,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:05:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:09,497 INFO L225 Difference]: With dead ends: 382 [2020-08-21 18:05:09,497 INFO L226 Difference]: Without dead ends: 210 [2020-08-21 18:05:09,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:09,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-21 18:05:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 173. [2020-08-21 18:05:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-08-21 18:05:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 205 transitions. [2020-08-21 18:05:09,602 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 205 transitions. Word has length 59 [2020-08-21 18:05:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:09,603 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 205 transitions. [2020-08-21 18:05:09,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:05:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 205 transitions. [2020-08-21 18:05:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:05:09,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:09,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:09,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:05:09,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash -511503066, now seen corresponding path program 1 times [2020-08-21 18:05:09,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:09,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825674078] [2020-08-21 18:05:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,955 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:05:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:05:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:05:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:10,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825674078] [2020-08-21 18:05:10,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:10,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:05:10,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505725554] [2020-08-21 18:05:10,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:05:10,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:10,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:05:10,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:05:10,028 INFO L87 Difference]: Start difference. First operand 173 states and 205 transitions. Second operand 5 states. [2020-08-21 18:05:10,490 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:11,723 INFO L93 Difference]: Finished difference Result 317 states and 389 transitions. [2020-08-21 18:05:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:05:11,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 18:05:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:11,732 INFO L225 Difference]: With dead ends: 317 [2020-08-21 18:05:11,732 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 18:05:11,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:05:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 18:05:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2020-08-21 18:05:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-21 18:05:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2020-08-21 18:05:11,783 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 60 [2020-08-21 18:05:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:11,784 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2020-08-21 18:05:11,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:05:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2020-08-21 18:05:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 18:05:11,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:11,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:11,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:05:11,787 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1192401668, now seen corresponding path program 1 times [2020-08-21 18:05:11,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:11,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192082387] [2020-08-21 18:05:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,138 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:05:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:05:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:05:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:12,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192082387] [2020-08-21 18:05:12,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:12,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:05:12,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372861596] [2020-08-21 18:05:12,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:05:12,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:12,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:05:12,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:05:12,248 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2020-08-21 18:05:12,638 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:12,957 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:13,216 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:13,471 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:14,384 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:16,812 INFO L93 Difference]: Finished difference Result 549 states and 680 transitions. [2020-08-21 18:05:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:05:16,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 18:05:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:16,818 INFO L225 Difference]: With dead ends: 549 [2020-08-21 18:05:16,818 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 18:05:16,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:05:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 18:05:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 344. [2020-08-21 18:05:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-21 18:05:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 418 transitions. [2020-08-21 18:05:16,917 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 418 transitions. Word has length 65 [2020-08-21 18:05:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:16,918 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 418 transitions. [2020-08-21 18:05:16,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:05:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 418 transitions. [2020-08-21 18:05:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:05:16,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:16,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:16,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:05:16,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1231670033, now seen corresponding path program 1 times [2020-08-21 18:05:16,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:16,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710751608] [2020-08-21 18:05:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,279 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:05:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:05:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 18:05:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 18:05:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 18:05:17,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710751608] [2020-08-21 18:05:17,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:17,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:05:17,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040667883] [2020-08-21 18:05:17,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:05:17,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:17,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:05:17,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:05:17,410 INFO L87 Difference]: Start difference. First operand 344 states and 418 transitions. Second operand 9 states. [2020-08-21 18:05:17,851 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:18,588 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:19,597 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:19,852 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:20,172 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:20,448 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:21,467 INFO L93 Difference]: Finished difference Result 891 states and 1152 transitions. [2020-08-21 18:05:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:05:21,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 18:05:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:21,474 INFO L225 Difference]: With dead ends: 891 [2020-08-21 18:05:21,474 INFO L226 Difference]: Without dead ends: 575 [2020-08-21 18:05:21,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:05:21,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-08-21 18:05:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 507. [2020-08-21 18:05:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-08-21 18:05:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 605 transitions. [2020-08-21 18:05:21,581 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 605 transitions. Word has length 70 [2020-08-21 18:05:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:21,581 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 605 transitions. [2020-08-21 18:05:21,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:05:21,582 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 605 transitions. [2020-08-21 18:05:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 18:05:21,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:21,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:21,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:05:21,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:21,586 INFO L82 PathProgramCache]: Analyzing trace with hash 853087743, now seen corresponding path program 1 times [2020-08-21 18:05:21,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:21,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218130136] [2020-08-21 18:05:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,837 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:05:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:05:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:05:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 18:05:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:21,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218130136] [2020-08-21 18:05:21,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:21,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:05:21,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599240592] [2020-08-21 18:05:21,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:05:21,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:21,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:05:21,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:05:21,991 INFO L87 Difference]: Start difference. First operand 507 states and 605 transitions. Second operand 9 states. [2020-08-21 18:05:23,146 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:23,398 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:05:23,654 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:23,894 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:24,813 INFO L93 Difference]: Finished difference Result 1079 states and 1378 transitions. [2020-08-21 18:05:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:05:24,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-08-21 18:05:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:24,819 INFO L225 Difference]: With dead ends: 1079 [2020-08-21 18:05:24,819 INFO L226 Difference]: Without dead ends: 600 [2020-08-21 18:05:24,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:05:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-21 18:05:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 520. [2020-08-21 18:05:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-21 18:05:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 619 transitions. [2020-08-21 18:05:24,909 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 619 transitions. Word has length 113 [2020-08-21 18:05:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:24,909 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 619 transitions. [2020-08-21 18:05:24,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:05:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 619 transitions. [2020-08-21 18:05:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 18:05:24,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:24,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:24,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:05:24,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:24,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1502717507, now seen corresponding path program 1 times [2020-08-21 18:05:24,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:24,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899703970] [2020-08-21 18:05:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,178 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:05:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:05:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:05:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 18:05:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:25,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899703970] [2020-08-21 18:05:25,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:25,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:05:25,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764299468] [2020-08-21 18:05:25,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:05:25,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:05:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:05:25,330 INFO L87 Difference]: Start difference. First operand 520 states and 619 transitions. Second operand 11 states. [2020-08-21 18:05:25,866 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:26,112 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:26,349 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:27,168 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:27,466 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:27,725 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:28,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:28,905 INFO L93 Difference]: Finished difference Result 1102 states and 1402 transitions. [2020-08-21 18:05:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:05:28,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-08-21 18:05:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:28,913 INFO L225 Difference]: With dead ends: 1102 [2020-08-21 18:05:28,913 INFO L226 Difference]: Without dead ends: 610 [2020-08-21 18:05:28,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:05:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-21 18:05:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 528. [2020-08-21 18:05:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-21 18:05:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 627 transitions. [2020-08-21 18:05:29,028 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 627 transitions. Word has length 113 [2020-08-21 18:05:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:29,029 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 627 transitions. [2020-08-21 18:05:29,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:05:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 627 transitions. [2020-08-21 18:05:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 18:05:29,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:29,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:29,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:05:29,032 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -733547492, now seen corresponding path program 1 times [2020-08-21 18:05:29,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:29,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35594361] [2020-08-21 18:05:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,318 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:05:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 18:05:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 18:05:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 18:05:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:29,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35594361] [2020-08-21 18:05:29,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:29,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:05:29,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200609413] [2020-08-21 18:05:29,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:05:29,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:29,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:05:29,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:05:29,538 INFO L87 Difference]: Start difference. First operand 528 states and 627 transitions. Second operand 7 states. [2020-08-21 18:05:30,194 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:30,740 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:33,299 INFO L93 Difference]: Finished difference Result 1603 states and 2056 transitions. [2020-08-21 18:05:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:05:33,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-08-21 18:05:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:33,310 INFO L225 Difference]: With dead ends: 1603 [2020-08-21 18:05:33,310 INFO L226 Difference]: Without dead ends: 1103 [2020-08-21 18:05:33,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:05:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-21 18:05:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1025. [2020-08-21 18:05:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-08-21 18:05:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1239 transitions. [2020-08-21 18:05:33,532 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1239 transitions. Word has length 113 [2020-08-21 18:05:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:33,532 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1239 transitions. [2020-08-21 18:05:33,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:05:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1239 transitions. [2020-08-21 18:05:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 18:05:33,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:33,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:33,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:05:33,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash 216342370, now seen corresponding path program 1 times [2020-08-21 18:05:33,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:33,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759174854] [2020-08-21 18:05:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,913 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:05:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:05:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 18:05:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 18:05:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 18:05:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:05:34,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759174854] [2020-08-21 18:05:34,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:34,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:05:34,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286083013] [2020-08-21 18:05:34,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:05:34,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:05:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:05:34,104 INFO L87 Difference]: Start difference. First operand 1025 states and 1239 transitions. Second operand 12 states. [2020-08-21 18:05:34,535 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:35,226 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:35,937 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:36,263 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:36,531 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:36,834 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:37,121 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:39,428 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:39,751 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:40,547 INFO L93 Difference]: Finished difference Result 2915 states and 3744 transitions. [2020-08-21 18:05:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 18:05:40,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 18:05:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:40,561 INFO L225 Difference]: With dead ends: 2915 [2020-08-21 18:05:40,561 INFO L226 Difference]: Without dead ends: 2120 [2020-08-21 18:05:40,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 18:05:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2020-08-21 18:05:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1808. [2020-08-21 18:05:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-08-21 18:05:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2166 transitions. [2020-08-21 18:05:40,977 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2166 transitions. Word has length 117 [2020-08-21 18:05:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:40,980 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2166 transitions. [2020-08-21 18:05:40,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:05:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2166 transitions. [2020-08-21 18:05:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-21 18:05:40,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:40,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:40,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:05:40,987 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1963590153, now seen corresponding path program 1 times [2020-08-21 18:05:40,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:40,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041538110] [2020-08-21 18:05:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,330 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:05:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:05:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:05:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 18:05:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 18:05:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 18:05:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 18:05:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:05:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:05:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-21 18:05:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-21 18:05:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 18:05:41,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041538110] [2020-08-21 18:05:41,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:05:41,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 18:05:41,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318352971] [2020-08-21 18:05:41,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 18:05:41,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:41,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 18:05:41,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:05:41,674 INFO L87 Difference]: Start difference. First operand 1808 states and 2166 transitions. Second operand 16 states. [2020-08-21 18:05:42,256 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:42,612 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:05:42,879 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:05:43,134 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 18:05:43,833 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:44,148 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:44,521 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:05:44,856 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:05:46,346 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:46,955 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:47,281 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:05:47,600 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:48,131 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:48,541 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:49,352 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:49,676 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:05:50,301 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:05:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:51,129 INFO L93 Difference]: Finished difference Result 3877 states and 4776 transitions. [2020-08-21 18:05:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 18:05:51,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-08-21 18:05:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:51,144 INFO L225 Difference]: With dead ends: 3877 [2020-08-21 18:05:51,144 INFO L226 Difference]: Without dead ends: 2287 [2020-08-21 18:05:51,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-21 18:05:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-08-21 18:05:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2095. [2020-08-21 18:05:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-08-21 18:05:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2456 transitions. [2020-08-21 18:05:51,570 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2456 transitions. Word has length 195 [2020-08-21 18:05:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:51,571 INFO L479 AbstractCegarLoop]: Abstraction has 2095 states and 2456 transitions. [2020-08-21 18:05:51,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 18:05:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2456 transitions. [2020-08-21 18:05:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-21 18:05:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:51,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:51,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:05:51,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash 905718191, now seen corresponding path program 1 times [2020-08-21 18:05:51,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:51,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651643757] [2020-08-21 18:05:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,010 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:05:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:05:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:05:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:05:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:05:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:05:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 18:05:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 18:05:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:05:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:05:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:05:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:05:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 18:05:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:05:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:05:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:05:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:05:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-08-21 18:05:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 18:05:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 18:05:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:05:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:05:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:05:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:05:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-08-21 18:05:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 18:05:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 18:05:52,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651643757] [2020-08-21 18:05:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:05:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 18:05:52,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700444427] [2020-08-21 18:05:52,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 18:05:52,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 18:05:52,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:05:52,746 INFO L87 Difference]: Start difference. First operand 2095 states and 2456 transitions. Second operand 14 states. [2020-08-21 18:05:53,480 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:05:54,336 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:05:56,412 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:56,771 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:57,062 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:57,359 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:05:57,665 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:05:57,944 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:05:59,069 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:05:59,571 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-08-21 18:05:59,862 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:06:00,146 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 18:06:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:06:01,790 INFO L93 Difference]: Finished difference Result 6312 states and 7560 transitions. [2020-08-21 18:06:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 18:06:01,791 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 335 [2020-08-21 18:06:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:06:01,813 INFO L225 Difference]: With dead ends: 6312 [2020-08-21 18:06:01,814 INFO L226 Difference]: Without dead ends: 4253 [2020-08-21 18:06:01,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 18:06:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2020-08-21 18:06:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4145. [2020-08-21 18:06:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4145 states. [2020-08-21 18:06:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 4794 transitions. [2020-08-21 18:06:02,549 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 4794 transitions. Word has length 335 [2020-08-21 18:06:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:06:02,550 INFO L479 AbstractCegarLoop]: Abstraction has 4145 states and 4794 transitions. [2020-08-21 18:06:02,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 18:06:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 4794 transitions. [2020-08-21 18:06:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-08-21 18:06:02,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:06:02,568 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:06:02,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:06:02,568 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:06:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:06:02,568 INFO L82 PathProgramCache]: Analyzing trace with hash -912853815, now seen corresponding path program 1 times [2020-08-21 18:06:02,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:06:02,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234580893] [2020-08-21 18:06:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:06:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,894 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:06:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:06:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:06:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:06:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:06:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:06:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:06:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:06:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:06:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:06:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:06:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 18:06:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 18:06:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:06:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:06:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:06:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:06:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:06:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 18:06:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 18:06:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:06:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:06:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:06:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:06:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 18:06:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-21 18:06:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 18:06:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:06:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 18:06:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-08-21 18:06:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:06:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-08-21 18:06:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:06:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:06:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:06:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:06:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-21 18:06:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 18:06:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:06:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 110 proven. 48 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-08-21 18:06:03,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234580893] [2020-08-21 18:06:03,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:06:03,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 18:06:03,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004554257] [2020-08-21 18:06:03,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 18:06:03,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:06:03,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 18:06:03,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:06:03,620 INFO L87 Difference]: Start difference. First operand 4145 states and 4794 transitions. Second operand 18 states.