/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:25:26,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:25:26,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:25:26,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:25:26,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:25:26,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:25:26,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:25:26,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:25:26,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:25:26,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:25:26,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:25:26,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:25:26,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:25:26,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:25:26,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:25:26,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:25:26,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:25:26,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:25:26,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:25:26,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:25:26,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:25:26,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:25:26,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:25:26,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:25:26,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:25:26,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:25:26,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:25:26,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:25:26,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:25:26,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:25:26,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:25:26,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:25:26,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:25:26,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:25:26,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:25:26,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:25:26,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:25:26,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:25:26,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:25:26,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:25:26,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:25:26,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:25:26,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:25:26,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:25:27,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:25:27,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:25:27,002 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:25:27,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:25:27,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:25:27,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:25:27,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:25:27,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:25:27,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:25:27,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:25:27,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:25:27,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:25:27,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:25:27,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:25:27,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:25:27,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:25:27,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:25:27,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:25:27,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:25:27,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:27,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:25:27,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:25:27,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:25:27,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:25:27,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:25:27,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:25:27,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:25:27,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:25:27,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:25:27,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:25:27,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:25:27,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:25:27,339 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:25:27,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-18 19:25:27,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e1f9b00/f54cb95272394c3598028c19299e7a37/FLAG20ce9b79d [2020-08-18 19:25:27,978 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:25:27,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-18 19:25:27,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e1f9b00/f54cb95272394c3598028c19299e7a37/FLAG20ce9b79d [2020-08-18 19:25:28,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5e1f9b00/f54cb95272394c3598028c19299e7a37 [2020-08-18 19:25:28,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:25:28,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:25:28,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:28,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:25:28,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:25:28,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28, skipping insertion in model container [2020-08-18 19:25:28,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:25:28,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:25:28,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:28,739 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:25:28,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:28,928 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:25:28,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28 WrapperNode [2020-08-18 19:25:28,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:28,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:25:28,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:25:28,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:25:28,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:28,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:29,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:29,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... [2020-08-18 19:25:29,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:25:29,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:25:29,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:25:29,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:25:29,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:25:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:25:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:25:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:25:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:25:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:25:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:25:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:25:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:25:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:25:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:25:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:25:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:25:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:25:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:25:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:25:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:25:30,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:25:30,199 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:25:30,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:30 BoogieIcfgContainer [2020-08-18 19:25:30,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:25:30,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:25:30,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:25:30,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:25:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:25:28" (1/3) ... [2020-08-18 19:25:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff755f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:30, skipping insertion in model container [2020-08-18 19:25:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:28" (2/3) ... [2020-08-18 19:25:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff755f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:30, skipping insertion in model container [2020-08-18 19:25:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:30" (3/3) ... [2020-08-18 19:25:30,218 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2020-08-18 19:25:30,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:25:30,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:25:30,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:25:30,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:25:30,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:25:30,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:25:30,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:25:30,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:25:30,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:25:30,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:25:30,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:25:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-18 19:25:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 19:25:30,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:30,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:30,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:30,316 INFO L82 PathProgramCache]: Analyzing trace with hash -229262266, now seen corresponding path program 1 times [2020-08-18 19:25:30,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:30,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446969677] [2020-08-18 19:25:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,030 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:31,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:25:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:31,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446969677] [2020-08-18 19:25:31,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:31,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:25:31,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588087104] [2020-08-18 19:25:31,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:25:31,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:25:31,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:31,165 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 4 states. [2020-08-18 19:25:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:32,347 INFO L93 Difference]: Finished difference Result 345 states and 435 transitions. [2020-08-18 19:25:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:25:32,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 19:25:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:32,373 INFO L225 Difference]: With dead ends: 345 [2020-08-18 19:25:32,373 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 19:25:32,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 19:25:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-18 19:25:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-18 19:25:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2020-08-18 19:25:32,476 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 59 [2020-08-18 19:25:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:32,477 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2020-08-18 19:25:32,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:25:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2020-08-18 19:25:32,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 19:25:32,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:32,481 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] [2020-08-18 19:25:32,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:25:32,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:32,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:32,482 INFO L82 PathProgramCache]: Analyzing trace with hash -751857026, now seen corresponding path program 1 times [2020-08-18 19:25:32,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:32,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168371760] [2020-08-18 19:25:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,865 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:25:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:25:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:25:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:32,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168371760] [2020-08-18 19:25:32,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:32,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:25:32,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805057740] [2020-08-18 19:25:32,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:25:32,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:32,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:25:32,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:25:32,931 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2020-08-18 19:25:33,448 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:34,444 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2020-08-18 19:25:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:25:34,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 19:25:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:34,452 INFO L225 Difference]: With dead ends: 286 [2020-08-18 19:25:34,452 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 19:25:34,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 19:25:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-18 19:25:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 19:25:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2020-08-18 19:25:34,507 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 60 [2020-08-18 19:25:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:34,508 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2020-08-18 19:25:34,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:25:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2020-08-18 19:25:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:25:34,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:34,510 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] [2020-08-18 19:25:34,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:25:34,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash -8533593, now seen corresponding path program 1 times [2020-08-18 19:25:34,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:34,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48083402] [2020-08-18 19:25:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,832 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:25:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:34,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48083402] [2020-08-18 19:25:34,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:34,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:34,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669128215] [2020-08-18 19:25:34,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:34,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:34,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:34,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:34,925 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 9 states. [2020-08-18 19:25:35,360 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:35,637 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:35,873 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:36,115 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:37,480 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2020-08-18 19:25:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:25:37,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 19:25:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:37,486 INFO L225 Difference]: With dead ends: 299 [2020-08-18 19:25:37,486 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 19:25:37,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 19:25:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-18 19:25:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 19:25:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2020-08-18 19:25:37,526 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 65 [2020-08-18 19:25:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:37,527 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2020-08-18 19:25:37,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2020-08-18 19:25:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:25:37,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:37,530 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] [2020-08-18 19:25:37,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:25:37,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2138732759, now seen corresponding path program 1 times [2020-08-18 19:25:37,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:37,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250845067] [2020-08-18 19:25:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,899 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 19:25:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:25:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:38,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250845067] [2020-08-18 19:25:38,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:38,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:38,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310281337] [2020-08-18 19:25:38,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:38,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:38,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:38,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:38,048 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 7 states. [2020-08-18 19:25:38,407 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:39,879 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:40,396 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2020-08-18 19:25:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:40,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 19:25:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:40,401 INFO L225 Difference]: With dead ends: 403 [2020-08-18 19:25:40,402 INFO L226 Difference]: Without dead ends: 283 [2020-08-18 19:25:40,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-18 19:25:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2020-08-18 19:25:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 19:25:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 270 transitions. [2020-08-18 19:25:40,452 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 270 transitions. Word has length 78 [2020-08-18 19:25:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:40,452 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 270 transitions. [2020-08-18 19:25:40,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 270 transitions. [2020-08-18 19:25:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 19:25:40,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:40,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:40,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:25:40,455 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914143, now seen corresponding path program 1 times [2020-08-18 19:25:40,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:40,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361064839] [2020-08-18 19:25:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,767 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:25:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:25:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:25:40,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361064839] [2020-08-18 19:25:40,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:40,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:40,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202187646] [2020-08-18 19:25:40,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:40,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:40,902 INFO L87 Difference]: Start difference. First operand 237 states and 270 transitions. Second operand 9 states. [2020-08-18 19:25:41,334 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:42,001 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:42,853 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:43,109 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:43,530 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:43,782 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:44,342 INFO L93 Difference]: Finished difference Result 491 states and 592 transitions. [2020-08-18 19:25:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:25:44,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 19:25:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:44,347 INFO L225 Difference]: With dead ends: 491 [2020-08-18 19:25:44,347 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 19:25:44,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:25:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 19:25:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2020-08-18 19:25:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 19:25:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2020-08-18 19:25:44,395 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 92 [2020-08-18 19:25:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:44,395 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2020-08-18 19:25:44,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2020-08-18 19:25:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:25:44,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:44,397 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] [2020-08-18 19:25:44,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:25:44,398 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:44,398 INFO L82 PathProgramCache]: Analyzing trace with hash 660673946, now seen corresponding path program 1 times [2020-08-18 19:25:44,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:44,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676272705] [2020-08-18 19:25:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,655 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:44,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:25:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:25:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:44,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676272705] [2020-08-18 19:25:44,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:44,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:44,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931800762] [2020-08-18 19:25:44,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:44,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:44,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:44,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:44,856 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand 9 states. [2020-08-18 19:25:45,913 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:46,151 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:46,395 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:46,637 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:47,532 INFO L93 Difference]: Finished difference Result 491 states and 595 transitions. [2020-08-18 19:25:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:25:47,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-18 19:25:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:47,535 INFO L225 Difference]: With dead ends: 491 [2020-08-18 19:25:47,535 INFO L226 Difference]: Without dead ends: 283 [2020-08-18 19:25:47,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-18 19:25:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 241. [2020-08-18 19:25:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-18 19:25:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2020-08-18 19:25:47,574 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 108 [2020-08-18 19:25:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:47,574 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2020-08-18 19:25:47,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2020-08-18 19:25:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:25:47,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:47,576 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] [2020-08-18 19:25:47,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:25:47,577 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1706020648, now seen corresponding path program 1 times [2020-08-18 19:25:47,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:47,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594419294] [2020-08-18 19:25:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,928 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:25:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:25:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:48,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594419294] [2020-08-18 19:25:48,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:48,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:25:48,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283786977] [2020-08-18 19:25:48,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:25:48,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:25:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:25:48,178 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand 11 states. [2020-08-18 19:25:48,801 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:49,053 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:49,281 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:49,956 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:50,206 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:50,447 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:51,275 INFO L93 Difference]: Finished difference Result 501 states and 606 transitions. [2020-08-18 19:25:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:25:51,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 19:25:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:51,278 INFO L225 Difference]: With dead ends: 501 [2020-08-18 19:25:51,278 INFO L226 Difference]: Without dead ends: 288 [2020-08-18 19:25:51,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:25:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-18 19:25:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2020-08-18 19:25:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-18 19:25:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2020-08-18 19:25:51,323 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 108 [2020-08-18 19:25:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:51,324 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2020-08-18 19:25:51,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:25:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2020-08-18 19:25:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:25:51,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:51,325 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] [2020-08-18 19:25:51,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:25:51,326 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1946560777, now seen corresponding path program 1 times [2020-08-18 19:25:51,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:51,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561250281] [2020-08-18 19:25:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,578 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:25:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:25:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:51,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561250281] [2020-08-18 19:25:51,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:51,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:51,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685645966] [2020-08-18 19:25:51,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:51,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:51,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:51,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:51,728 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand 7 states. [2020-08-18 19:25:52,101 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:52,638 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:54,605 INFO L93 Difference]: Finished difference Result 683 states and 844 transitions. [2020-08-18 19:25:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:54,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-18 19:25:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:54,610 INFO L225 Difference]: With dead ends: 683 [2020-08-18 19:25:54,611 INFO L226 Difference]: Without dead ends: 466 [2020-08-18 19:25:54,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:25:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-18 19:25:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 424. [2020-08-18 19:25:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-08-18 19:25:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 492 transitions. [2020-08-18 19:25:54,689 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 492 transitions. Word has length 108 [2020-08-18 19:25:54,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:54,689 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 492 transitions. [2020-08-18 19:25:54,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 492 transitions. [2020-08-18 19:25:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 19:25:54,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:54,691 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] [2020-08-18 19:25:54,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:25:54,692 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 79738257, now seen corresponding path program 1 times [2020-08-18 19:25:54,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:54,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268502642] [2020-08-18 19:25:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,047 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:25:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:25:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:25:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 19:25:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:55,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268502642] [2020-08-18 19:25:55,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:55,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:25:55,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821304719] [2020-08-18 19:25:55,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:25:55,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:25:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:25:55,294 INFO L87 Difference]: Start difference. First operand 424 states and 492 transitions. Second operand 12 states. [2020-08-18 19:25:55,829 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:56,481 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:57,483 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:57,762 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:58,014 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:58,285 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:58,542 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:59,827 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:00,078 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:00,905 INFO L93 Difference]: Finished difference Result 1180 states and 1453 transitions. [2020-08-18 19:26:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:26:00,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-18 19:26:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:00,915 INFO L225 Difference]: With dead ends: 1180 [2020-08-18 19:26:00,915 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 19:26:00,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 19:26:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 19:26:01,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2020-08-18 19:26:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-18 19:26:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 846 transitions. [2020-08-18 19:26:01,066 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 846 transitions. Word has length 112 [2020-08-18 19:26:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:01,067 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 846 transitions. [2020-08-18 19:26:01,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:26:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 846 transitions. [2020-08-18 19:26:01,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-18 19:26:01,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:01,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:01,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:26:01,072 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:01,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash -992810877, now seen corresponding path program 1 times [2020-08-18 19:26:01,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:01,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442150508] [2020-08-18 19:26:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,426 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:26:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 19:26:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 19:26:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 19:26:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 19:26:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 19:26:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:26:01,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442150508] [2020-08-18 19:26:01,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:01,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:26:01,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878958644] [2020-08-18 19:26:01,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:26:01,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:26:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:26:01,785 INFO L87 Difference]: Start difference. First operand 736 states and 846 transitions. Second operand 16 states. [2020-08-18 19:26:02,926 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:03,267 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 19:26:03,539 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 19:26:03,794 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 19:26:04,515 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 19:26:04,806 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:26:05,255 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-18 19:26:06,067 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 19:26:06,717 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:07,234 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 19:26:07,902 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 19:26:08,379 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 19:26:08,673 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:09,249 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:09,676 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 19:26:10,304 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-18 19:26:10,996 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:26:11,476 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 19:26:12,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:12,209 INFO L93 Difference]: Finished difference Result 1615 states and 1911 transitions. [2020-08-18 19:26:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-18 19:26:12,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-18 19:26:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:12,215 INFO L225 Difference]: With dead ends: 1615 [2020-08-18 19:26:12,215 INFO L226 Difference]: Without dead ends: 977 [2020-08-18 19:26:12,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 19:26:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-08-18 19:26:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 884. [2020-08-18 19:26:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-08-18 19:26:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1024 transitions. [2020-08-18 19:26:12,438 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1024 transitions. Word has length 174 [2020-08-18 19:26:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:12,440 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1024 transitions. [2020-08-18 19:26:12,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1024 transitions. [2020-08-18 19:26:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-18 19:26:12,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:12,452 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:26:12,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:26:12,453 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1611643875, now seen corresponding path program 1 times [2020-08-18 19:26:12,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:12,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12677413] [2020-08-18 19:26:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,782 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:26:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:26:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 19:26:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-18 19:26:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 19:26:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 19:26:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-18 19:26:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 19:26:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-18 19:26:13,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12677413] [2020-08-18 19:26:13,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:13,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:26:13,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248639503] [2020-08-18 19:26:13,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:26:13,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:13,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:26:13,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:26:13,276 INFO L87 Difference]: Start difference. First operand 884 states and 1024 transitions. Second operand 15 states. [2020-08-18 19:26:14,693 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:14,964 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:15,204 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:15,443 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:16,780 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:17,865 INFO L93 Difference]: Finished difference Result 2344 states and 2821 transitions. [2020-08-18 19:26:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:26:17,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-18 19:26:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:17,875 INFO L225 Difference]: With dead ends: 2344 [2020-08-18 19:26:17,875 INFO L226 Difference]: Without dead ends: 1393 [2020-08-18 19:26:17,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 19:26:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-08-18 19:26:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1174. [2020-08-18 19:26:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-08-18 19:26:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1389 transitions. [2020-08-18 19:26:18,077 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1389 transitions. Word has length 311 [2020-08-18 19:26:18,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:18,077 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1389 transitions. [2020-08-18 19:26:18,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:26:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1389 transitions. [2020-08-18 19:26:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-18 19:26:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:18,085 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:18,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:26:18,086 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:18,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1867648024, now seen corresponding path program 1 times [2020-08-18 19:26:18,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:18,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625811539] [2020-08-18 19:26:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,404 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:18,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:26:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:26:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 19:26:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 19:26:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 19:26:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-18 19:26:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 19:26:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-18 19:26:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-18 19:26:18,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625811539] [2020-08-18 19:26:18,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:18,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:26:18,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160270195] [2020-08-18 19:26:18,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:26:18,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:18,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:26:18,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:26:18,834 INFO L87 Difference]: Start difference. First operand 1174 states and 1389 transitions. Second operand 16 states. [2020-08-18 19:26:19,482 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:19,814 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:20,084 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:20,320 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:20,997 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:21,920 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:22,192 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:22,686 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:23,344 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:24,177 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:24,433 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:25,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:25,074 INFO L93 Difference]: Finished difference Result 2229 states and 2675 transitions. [2020-08-18 19:26:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 19:26:25,075 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 317 [2020-08-18 19:26:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:25,083 INFO L225 Difference]: With dead ends: 2229 [2020-08-18 19:26:25,084 INFO L226 Difference]: Without dead ends: 1176 [2020-08-18 19:26:25,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 19:26:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-18 19:26:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1126. [2020-08-18 19:26:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1126 states. [2020-08-18 19:26:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1315 transitions. [2020-08-18 19:26:25,292 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1315 transitions. Word has length 317 [2020-08-18 19:26:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:25,293 INFO L479 AbstractCegarLoop]: Abstraction has 1126 states and 1315 transitions. [2020-08-18 19:26:25,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1315 transitions. [2020-08-18 19:26:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-18 19:26:25,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:25,308 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 19:26:25,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:26:25,309 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:25,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1046222869, now seen corresponding path program 1 times [2020-08-18 19:26:25,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:25,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882372502] [2020-08-18 19:26:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,624 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:25,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 19:26:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:26:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-18 19:26:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 19:26:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 19:26:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 19:26:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 19:26:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 19:26:25,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882372502] [2020-08-18 19:26:25,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:25,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:26:25,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117388264] [2020-08-18 19:26:25,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:26:25,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:26:25,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:26:25,955 INFO L87 Difference]: Start difference. First operand 1126 states and 1315 transitions. Second operand 11 states.