/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:13:11,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:13:11,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:13:11,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:13:11,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:13:11,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:13:11,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:13:11,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:13:11,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:13:11,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:13:11,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:13:11,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:13:11,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:13:11,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:13:11,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:13:11,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:13:11,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:13:11,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:13:11,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:13:11,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:13:11,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:13:11,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:13:11,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:13:11,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:13:11,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:13:11,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:13:11,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:13:11,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:13:11,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:13:11,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:13:11,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:13:11,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:13:11,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:13:11,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:13:11,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:13:11,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:13:11,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:13:11,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:13:11,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:13:11,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:13:11,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:13:11,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:13:11,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:13:11,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:13:11,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:13:11,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:13:11,123 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:13:11,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:13:11,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:13:11,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:13:11,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:13:11,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:13:11,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:13:11,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:13:11,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:13:11,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:13:11,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:13:11,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:13:11,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:13:11,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:13:11,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:13:11,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:13:11,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:13:11,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:13:11,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:13:11,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:13:11,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:13:11,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:13:11,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:13:11,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:13:11,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:13:11,432 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:13:11,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 17:13:11,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5627ded35/eca1db3c798345278144ea2d4b34c5b2/FLAG2c0ea861e [2020-08-21 17:13:11,985 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:13:11,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-21 17:13:11,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5627ded35/eca1db3c798345278144ea2d4b34c5b2/FLAG2c0ea861e [2020-08-21 17:13:12,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5627ded35/eca1db3c798345278144ea2d4b34c5b2 [2020-08-21 17:13:12,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:13:12,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:13:12,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:13:12,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:13:12,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:13:12,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:13:12" (1/1) ... [2020-08-21 17:13:12,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:12, skipping insertion in model container [2020-08-21 17:13:12,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:13:12" (1/1) ... [2020-08-21 17:13:12,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:13:12,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:13:12,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:13:12,756 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:13:12,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:13:13,023 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:13:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13 WrapperNode [2020-08-21 17:13:13,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:13:13,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:13:13,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:13:13,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:13:13,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... [2020-08-21 17:13:13,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:13:13,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:13:13,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:13:13,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:13:13,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:13:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:13:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:13:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:13:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:13:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:13:13,205 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:13:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:13:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:13:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:13:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:13:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:13:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:13:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:13:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:13:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:13:14,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:13:14,239 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:13:14,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:13:14 BoogieIcfgContainer [2020-08-21 17:13:14,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:13:14,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:13:14,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:13:14,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:13:14,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:13:12" (1/3) ... [2020-08-21 17:13:14,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbdc96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:13:14, skipping insertion in model container [2020-08-21 17:13:14,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:13" (2/3) ... [2020-08-21 17:13:14,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbdc96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:13:14, skipping insertion in model container [2020-08-21 17:13:14,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:13:14" (3/3) ... [2020-08-21 17:13:14,253 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-21 17:13:14,264 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:13:14,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:13:14,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:13:14,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:13:14,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:13:14,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:13:14,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:13:14,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:13:14,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:13:14,312 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:13:14,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:13:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 17:13:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:13:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:14,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:14,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:14,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-21 17:13:14,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:14,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254059013] [2020-08-21 17:13:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,025 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:13:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:13:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:15,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254059013] [2020-08-21 17:13:15,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:15,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:13:15,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627135698] [2020-08-21 17:13:15,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:13:15,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:13:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:13:15,168 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 17:13:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:16,293 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-21 17:13:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:13:16,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:13:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:16,318 INFO L225 Difference]: With dead ends: 306 [2020-08-21 17:13:16,319 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 17:13:16,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:13:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 17:13:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-21 17:13:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 17:13:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-21 17:13:16,438 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-21 17:13:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:16,439 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-21 17:13:16,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:13:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-21 17:13:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:13:16,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:16,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:16,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:13:16,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-21 17:13:16,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:16,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268885941] [2020-08-21 17:13:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,828 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:16,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:13:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:13:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:16,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268885941] [2020-08-21 17:13:16,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:16,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:13:16,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568346605] [2020-08-21 17:13:16,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:13:16,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:13:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:13:16,871 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-21 17:13:17,277 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:18,065 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-21 17:13:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:13:18,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:13:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:18,070 INFO L225 Difference]: With dead ends: 235 [2020-08-21 17:13:18,071 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 17:13:18,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:13:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 17:13:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 17:13:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 17:13:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 17:13:18,111 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-21 17:13:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:18,112 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 17:13:18,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:13:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 17:13:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:13:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:18,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:18,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:13:18,115 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-21 17:13:18,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:18,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258184480] [2020-08-21 17:13:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,449 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:13:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:13:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:18,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258184480] [2020-08-21 17:13:18,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:18,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:13:18,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286068273] [2020-08-21 17:13:18,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:13:18,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:13:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:13:18,567 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-21 17:13:18,928 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:19,260 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:19,516 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:19,754 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:21,014 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-21 17:13:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:13:21,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 17:13:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:21,018 INFO L225 Difference]: With dead ends: 248 [2020-08-21 17:13:21,018 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 17:13:21,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 17:13:21,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-21 17:13:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 17:13:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-21 17:13:21,057 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-21 17:13:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:21,057 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-21 17:13:21,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:13:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-21 17:13:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:13:21,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:21,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:21,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:13:21,061 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:21,061 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-21 17:13:21,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:21,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086062811] [2020-08-21 17:13:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,341 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:13:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:13:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:13:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:21,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086062811] [2020-08-21 17:13:21,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:21,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:13:21,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441961600] [2020-08-21 17:13:21,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:13:21,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:13:21,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:13:21,514 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-21 17:13:21,804 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:22,928 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:23,611 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-21 17:13:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:13:23,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 17:13:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:23,616 INFO L225 Difference]: With dead ends: 345 [2020-08-21 17:13:23,616 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 17:13:23,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:13:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 17:13:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-21 17:13:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-21 17:13:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-21 17:13:23,686 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-21 17:13:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:23,687 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-21 17:13:23,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:13:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-21 17:13:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:13:23,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:23,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:23,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:13:23,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-21 17:13:23,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:23,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210995481] [2020-08-21 17:13:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,055 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:24,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:13:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:13:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:13:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:24,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210995481] [2020-08-21 17:13:24,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:24,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:13:24,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412870880] [2020-08-21 17:13:24,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:13:24,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:24,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:13:24,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:24,176 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-21 17:13:24,591 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:24,885 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:25,138 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:25,396 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:25,918 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:26,824 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:27,101 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:27,327 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:27,567 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:27,829 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:28,092 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:29,395 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:29,756 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:30,371 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-21 17:13:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:13:30,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 17:13:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:30,379 INFO L225 Difference]: With dead ends: 713 [2020-08-21 17:13:30,379 INFO L226 Difference]: Without dead ends: 534 [2020-08-21 17:13:30,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 17:13:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-21 17:13:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-21 17:13:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-21 17:13:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-21 17:13:30,499 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-21 17:13:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:30,499 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-21 17:13:30,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:13:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-21 17:13:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 17:13:30,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:30,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 17:13:30,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:13:30,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-21 17:13:30,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:30,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111325764] [2020-08-21 17:13:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,770 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:13:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 17:13:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 17:13:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 17:13:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 17:13:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 17:13:31,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111325764] [2020-08-21 17:13:31,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:31,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:13:31,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767456028] [2020-08-21 17:13:31,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:13:31,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:31,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:13:31,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:13:31,136 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-21 17:13:31,539 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:32,130 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:32,675 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:32,947 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:13:33,221 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:33,466 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:33,702 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:33,961 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:13:34,247 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:34,502 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:35,937 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:36,182 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:13:36,409 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:36,647 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:37,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:37,060 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-21 17:13:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 17:13:37,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-21 17:13:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:37,065 INFO L225 Difference]: With dead ends: 957 [2020-08-21 17:13:37,066 INFO L226 Difference]: Without dead ends: 509 [2020-08-21 17:13:37,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 17:13:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-21 17:13:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-21 17:13:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 17:13:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-21 17:13:37,149 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-21 17:13:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:37,149 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-21 17:13:37,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:13:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-21 17:13:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 17:13:37,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:37,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:37,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:13:37,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-21 17:13:37,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:37,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516537561] [2020-08-21 17:13:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,433 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:13:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 17:13:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 17:13:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 17:13:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 17:13:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 17:13:37,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516537561] [2020-08-21 17:13:37,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:37,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:13:37,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5718627] [2020-08-21 17:13:37,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:13:37,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:37,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:13:37,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:37,631 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-21 17:13:38,090 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:38,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:38,566 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:39,148 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:39,399 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:39,622 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:40,558 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-21 17:13:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:13:40,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 17:13:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:40,566 INFO L225 Difference]: With dead ends: 807 [2020-08-21 17:13:40,566 INFO L226 Difference]: Without dead ends: 389 [2020-08-21 17:13:40,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:13:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-21 17:13:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-21 17:13:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 17:13:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-21 17:13:40,663 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-21 17:13:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:40,664 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-21 17:13:40,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:13:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-21 17:13:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 17:13:40,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:40,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:40,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:13:40,669 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-21 17:13:40,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:40,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141710932] [2020-08-21 17:13:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,918 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:40,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:13:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 17:13:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 17:13:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 17:13:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 17:13:41,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141710932] [2020-08-21 17:13:41,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:41,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:13:41,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384158318] [2020-08-21 17:13:41,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:13:41,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:41,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:13:41,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:13:41,074 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-21 17:13:42,387 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:42,608 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:42,843 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:43,068 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:43,417 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-21 17:13:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:13:43,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 17:13:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:43,422 INFO L225 Difference]: With dead ends: 670 [2020-08-21 17:13:43,422 INFO L226 Difference]: Without dead ends: 394 [2020-08-21 17:13:43,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:13:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-21 17:13:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-21 17:13:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 17:13:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-21 17:13:43,484 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-21 17:13:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:43,485 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-21 17:13:43,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:13:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-21 17:13:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 17:13:43,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:43,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:43,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:13:43,488 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:43,488 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-21 17:13:43,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:43,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031968296] [2020-08-21 17:13:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,770 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:13:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 17:13:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 17:13:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 17:13:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 17:13:43,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031968296] [2020-08-21 17:13:43,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:43,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:13:43,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474811591] [2020-08-21 17:13:43,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:13:43,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:43,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:13:43,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:13:43,939 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-21 17:13:44,321 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:45,861 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:46,165 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:46,399 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:46,630 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:46,913 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:47,259 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-21 17:13:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:13:47,260 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 17:13:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:47,264 INFO L225 Difference]: With dead ends: 401 [2020-08-21 17:13:47,264 INFO L226 Difference]: Without dead ends: 398 [2020-08-21 17:13:47,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:13:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-21 17:13:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-21 17:13:47,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 17:13:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-21 17:13:47,340 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-21 17:13:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:47,340 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-21 17:13:47,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:13:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-21 17:13:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 17:13:47,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:47,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:47,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:13:47,343 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-21 17:13:47,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:47,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260373647] [2020-08-21 17:13:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,732 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:13:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 17:13:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 17:13:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 17:13:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 17:13:47,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260373647] [2020-08-21 17:13:47,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:47,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:13:47,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230431868] [2020-08-21 17:13:47,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:13:47,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:48,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:13:48,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:48,000 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-21 17:13:48,612 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:49,590 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:50,116 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:50,390 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:50,630 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:50,889 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:51,163 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:51,411 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:52,843 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:53,077 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:53,782 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-21 17:13:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 17:13:53,783 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-21 17:13:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:53,787 INFO L225 Difference]: With dead ends: 881 [2020-08-21 17:13:53,787 INFO L226 Difference]: Without dead ends: 600 [2020-08-21 17:13:53,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 17:13:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-21 17:13:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-21 17:13:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-21 17:13:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-21 17:13:53,888 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-21 17:13:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:53,889 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-21 17:13:53,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:13:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-21 17:13:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-21 17:13:53,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:53,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:53,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:13:53,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:53,894 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-21 17:13:53,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:53,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162196508] [2020-08-21 17:13:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,190 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:13:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:13:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:13:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 17:13:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 17:13:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-21 17:13:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-21 17:13:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 17:13:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-21 17:13:54,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162196508] [2020-08-21 17:13:54,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:54,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 17:13:54,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640939530] [2020-08-21 17:13:54,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:13:54,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:54,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:13:54,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:13:54,507 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-21 17:13:55,065 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:55,716 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:56,572 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:56,851 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:57,082 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:57,316 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:57,575 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:57,805 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:59,067 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:59,327 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:14:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:14:00,494 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-21 17:14:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 17:14:00,494 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-21 17:14:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:14:00,504 INFO L225 Difference]: With dead ends: 1240 [2020-08-21 17:14:00,504 INFO L226 Difference]: Without dead ends: 814 [2020-08-21 17:14:00,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 17:14:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-21 17:14:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-21 17:14:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-21 17:14:00,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-21 17:14:00,615 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-21 17:14:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:14:00,616 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-21 17:14:00,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 17:14:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-21 17:14:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 17:14:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:14:00,619 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:14:00,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:14:00,620 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:14:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:14:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-21 17:14:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:14:00,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066837086] [2020-08-21 17:14:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:14:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,929 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:14:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:14:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:14:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:14:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:14:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:14:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:14:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:14:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:14:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:14:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:14:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 17:14:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 17:14:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 17:14:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 17:14:01,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066837086] [2020-08-21 17:14:01,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:14:01,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:14:01,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523558139] [2020-08-21 17:14:01,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:14:01,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:14:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:14:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:14:01,224 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-21 17:14:02,391 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:14:02,655 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:14:04,095 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:14:04,333 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:14:04,555 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:14:04,982 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 17:14:06,549 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 17:14:06,831 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 17:14:07,162 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:14:07,419 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:14:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:14:08,371 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-21 17:14:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 17:14:08,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-21 17:14:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:14:08,379 INFO L225 Difference]: With dead ends: 1408 [2020-08-21 17:14:08,379 INFO L226 Difference]: Without dead ends: 982 [2020-08-21 17:14:08,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 17:14:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-21 17:14:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-21 17:14:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-21 17:14:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-21 17:14:08,528 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-21 17:14:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:14:08,529 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-21 17:14:08,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:14:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-21 17:14:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 17:14:08,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:14:08,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:14:08,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:14:08,533 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:14:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:14:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-21 17:14:08,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:14:08,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907524030] [2020-08-21 17:14:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:14:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,853 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:14:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:14:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:14:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:14:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:14:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:14:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:14:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:14:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:14:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:14:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:14:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 17:14:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 17:14:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 17:14:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-21 17:14:09,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907524030] [2020-08-21 17:14:09,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:14:09,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:14:09,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520998676] [2020-08-21 17:14:09,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:14:09,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:14:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:14:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:14:09,128 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-21 17:14:09,694 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:09,931 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:10,153 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187