/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:37:24,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:37:24,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:37:24,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:37:24,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:37:24,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:37:24,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:37:24,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:37:24,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:37:24,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:37:24,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:37:24,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:37:24,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:37:24,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:37:24,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:37:24,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:37:24,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:37:24,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:37:24,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:37:24,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:37:24,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:37:24,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:37:24,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:37:24,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:37:24,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:37:24,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:37:24,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:37:24,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:37:24,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:37:24,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:37:24,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:37:24,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:37:24,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:37:24,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:37:24,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:37:24,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:37:24,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:37:24,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:37:24,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:37:24,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:37:24,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:37:24,803 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 [2020-08-27 21:37:24,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:37:24,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:37:24,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:37:24,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:37:24,860 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:37:24,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:37:24,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:37:24,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:37:24,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:37:24,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:37:24,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:37:24,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:37:24,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:37:24,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:37:24,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:37:24,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:37:24,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:37:24,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:37:24,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:37:24,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:37:24,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:37:24,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:37:24,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:37:24,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:37:24,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:37:24,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:37:24,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:37:24,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:37:24,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:37:24,866 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 -> false [2020-08-27 21:37:25,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:37:25,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:37:25,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:37:25,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:37:25,372 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:37:25,374 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-27 21:37:25,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c54fd12cd/e1b8d1b82fb54f65a7e120f901bab1e1/FLAGb3b1c5ade [2020-08-27 21:37:26,139 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:37:26,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-27 21:37:26,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c54fd12cd/e1b8d1b82fb54f65a7e120f901bab1e1/FLAGb3b1c5ade [2020-08-27 21:37:26,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c54fd12cd/e1b8d1b82fb54f65a7e120f901bab1e1 [2020-08-27 21:37:26,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:37:26,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:37:26,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:37:26,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:37:26,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:37:26,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:37:26" (1/1) ... [2020-08-27 21:37:26,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:26, skipping insertion in model container [2020-08-27 21:37:26,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:37:26" (1/1) ... [2020-08-27 21:37:26,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:37:26,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:37:26,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:37:26,972 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:37:27,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:37:27,172 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:37:27,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27 WrapperNode [2020-08-27 21:37:27,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:37:27,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:37:27,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:37:27,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:37:27,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (1/1) ... [2020-08-27 21:37:27,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:37:27,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:37:27,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:37:27,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:37:27,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (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 [2020-08-27 21:37:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:37:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:37:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:37:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:37:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:37:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:37:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:37:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:37:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:37:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:37:27,366 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:37:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:37:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:37:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:37:27,367 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:37:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:37:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:37:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:37:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:37:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:37:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:37:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:37:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:37:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:37:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:37:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:37:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:37:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:37:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:37:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:37:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:37:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:37:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:37:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:37:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:37:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:37:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:37:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:37:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:37:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:37:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:37:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:37:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:37:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:37:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:37:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-27 21:37:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:37:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:37:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:37:28,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:37:28,569 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:37:28,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:37:28 BoogieIcfgContainer [2020-08-27 21:37:28,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:37:28,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:37:28,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:37:28,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:37:28,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:37:26" (1/3) ... [2020-08-27 21:37:28,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40318b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:37:28, skipping insertion in model container [2020-08-27 21:37:28,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:27" (2/3) ... [2020-08-27 21:37:28,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40318b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:37:28, skipping insertion in model container [2020-08-27 21:37:28,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:37:28" (3/3) ... [2020-08-27 21:37:28,592 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-27 21:37:28,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:37:28,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:37:28,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:37:28,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:37:28,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:37:28,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:37:28,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:37:28,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:37:28,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:37:28,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:37:28,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:37:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-27 21:37:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:37:28,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:28,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:28,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:28,741 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-27 21:37:28,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:28,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135295043] [2020-08-27 21:37:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,472 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:37:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:37:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:29,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135295043] [2020-08-27 21:37:29,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:29,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:37:29,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216422344] [2020-08-27 21:37:29,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:37:29,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:29,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:37:29,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:37:29,650 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-27 21:37:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:31,121 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-27 21:37:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:37:31,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-27 21:37:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:31,143 INFO L225 Difference]: With dead ends: 353 [2020-08-27 21:37:31,143 INFO L226 Difference]: Without dead ends: 196 [2020-08-27 21:37:31,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:37:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-27 21:37:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-27 21:37:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-27 21:37:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-27 21:37:31,274 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-27 21:37:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:31,275 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-27 21:37:31,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:37:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-27 21:37:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:37:31,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:31,287 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] [2020-08-27 21:37:31,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:37:31,288 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:31,288 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-27 21:37:31,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:31,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620649758] [2020-08-27 21:37:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,767 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:37:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:37:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:31,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620649758] [2020-08-27 21:37:31,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:31,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:37:31,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244342247] [2020-08-27 21:37:31,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:37:31,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:37:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:37:31,845 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-27 21:37:32,367 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:33,659 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-27 21:37:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:37:33,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-27 21:37:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:33,664 INFO L225 Difference]: With dead ends: 288 [2020-08-27 21:37:33,664 INFO L226 Difference]: Without dead ends: 186 [2020-08-27 21:37:33,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:37:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-27 21:37:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-27 21:37:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-27 21:37:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-27 21:37:33,712 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-27 21:37:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:33,712 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-27 21:37:33,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:37:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-27 21:37:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:37:33,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:33,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:33,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:37:33,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-27 21:37:33,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:33,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356372867] [2020-08-27 21:37:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,112 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:37:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:37:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:34,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356372867] [2020-08-27 21:37:34,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:34,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:37:34,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252194637] [2020-08-27 21:37:34,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:37:34,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:37:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:37:34,225 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-27 21:37:34,640 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:35,009 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:35,317 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:35,633 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:36,548 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:39,330 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-27 21:37:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:37:39,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-27 21:37:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:39,337 INFO L225 Difference]: With dead ends: 503 [2020-08-27 21:37:39,337 INFO L226 Difference]: Without dead ends: 382 [2020-08-27 21:37:39,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:37:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-27 21:37:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-27 21:37:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-27 21:37:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-27 21:37:39,417 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-27 21:37:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:39,418 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-27 21:37:39,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:37:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-27 21:37:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-27 21:37:39,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:39,420 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] [2020-08-27 21:37:39,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:37:39,421 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-27 21:37:39,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:39,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159517507] [2020-08-27 21:37:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,824 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:37:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:37:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:37:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:39,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159517507] [2020-08-27 21:37:39,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:39,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:37:39,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809983879] [2020-08-27 21:37:39,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:37:39,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:39,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:37:39,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:37:39,972 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-27 21:37:40,390 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:41,617 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:42,152 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:42,451 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:42,752 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:44,941 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-27 21:37:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:37:44,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-27 21:37:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:44,951 INFO L225 Difference]: With dead ends: 992 [2020-08-27 21:37:44,951 INFO L226 Difference]: Without dead ends: 711 [2020-08-27 21:37:44,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-27 21:37:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-27 21:37:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-27 21:37:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-27 21:37:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-27 21:37:45,120 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-27 21:37:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:45,121 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-27 21:37:45,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:37:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-27 21:37:45,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-27 21:37:45,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:45,124 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] [2020-08-27 21:37:45,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:37:45,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-27 21:37:45,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:45,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348040981] [2020-08-27 21:37:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,466 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:37:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:37:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-27 21:37:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:45,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348040981] [2020-08-27 21:37:45,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:45,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:37:45,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101148436] [2020-08-27 21:37:45,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:37:45,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:37:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:37:45,618 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-27 21:37:46,022 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:47,325 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:47,673 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:47,991 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:48,818 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:50,542 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-27 21:37:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 21:37:50,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-27 21:37:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:50,555 INFO L225 Difference]: With dead ends: 1565 [2020-08-27 21:37:50,555 INFO L226 Difference]: Without dead ends: 1027 [2020-08-27 21:37:50,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:37:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-27 21:37:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-27 21:37:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-27 21:37:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-27 21:37:50,776 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-27 21:37:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:50,778 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-27 21:37:50,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:37:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-27 21:37:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:37:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:50,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:37:50,783 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:50,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-27 21:37:50,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:50,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369742127] [2020-08-27 21:37:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,187 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:37:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:37:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:51,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369742127] [2020-08-27 21:37:51,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:51,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:37:51,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340104232] [2020-08-27 21:37:51,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:37:51,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:51,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:37:51,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:37:51,422 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-27 21:37:52,729 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:53,042 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:37:53,377 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:53,705 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:55,244 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-27 21:37:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:37:55,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-27 21:37:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:55,257 INFO L225 Difference]: With dead ends: 1894 [2020-08-27 21:37:55,257 INFO L226 Difference]: Without dead ends: 1101 [2020-08-27 21:37:55,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:37:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-27 21:37:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-27 21:37:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-27 21:37:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-27 21:37:55,496 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-27 21:37:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:55,499 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-27 21:37:55,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:37:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-27 21:37:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:37:55,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:55,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:55,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:37:55,506 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-27 21:37:55,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:55,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704882048] [2020-08-27 21:37:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,861 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:55,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:37:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:37:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:56,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704882048] [2020-08-27 21:37:56,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:56,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:37:56,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409272322] [2020-08-27 21:37:56,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:37:56,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:56,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:37:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:37:56,050 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-27 21:37:56,778 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:57,141 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:57,377 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:58,299 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:58,637 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:58,953 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:38:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:00,819 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-27 21:38:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:38:00,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-27 21:38:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:00,833 INFO L225 Difference]: With dead ends: 1948 [2020-08-27 21:38:00,833 INFO L226 Difference]: Without dead ends: 1129 [2020-08-27 21:38:00,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-27 21:38:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-27 21:38:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-27 21:38:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-27 21:38:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-27 21:38:01,085 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-27 21:38:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:01,086 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-27 21:38:01,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:38:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-27 21:38:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:38:01,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:01,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:01,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:38:01,091 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:01,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-27 21:38:01,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:01,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765937933] [2020-08-27 21:38:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,473 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:38:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:38:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:38:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:38:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-27 21:38:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:01,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765937933] [2020-08-27 21:38:01,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:01,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:38:01,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915316182] [2020-08-27 21:38:01,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:38:01,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:01,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:38:01,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:38:01,674 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-27 21:38:02,058 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:38:02,703 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:38:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:06,365 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-27 21:38:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:38:06,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-27 21:38:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:06,380 INFO L225 Difference]: With dead ends: 2919 [2020-08-27 21:38:06,380 INFO L226 Difference]: Without dead ends: 2084 [2020-08-27 21:38:06,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-27 21:38:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-27 21:38:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-27 21:38:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-27 21:38:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-27 21:38:06,763 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-27 21:38:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:06,763 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-27 21:38:06,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:38:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-27 21:38:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-27 21:38:06,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:06,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:38:06,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:38:06,769 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:06,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:06,770 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-27 21:38:06,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:06,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547433198] [2020-08-27 21:38:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,144 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:38:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:38:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:38:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-27 21:38:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 21:38:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:38:07,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547433198] [2020-08-27 21:38:07,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:38:07,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:38:07,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716803748] [2020-08-27 21:38:07,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:38:07,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:38:07,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:38:07,287 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-27 21:38:07,665 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:38:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:11,338 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-27 21:38:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:38:11,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-27 21:38:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:11,364 INFO L225 Difference]: With dead ends: 3491 [2020-08-27 21:38:11,364 INFO L226 Difference]: Without dead ends: 3488 [2020-08-27 21:38:11,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:38:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-27 21:38:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-27 21:38:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-27 21:38:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-27 21:38:12,068 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-27 21:38:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:12,071 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-27 21:38:12,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:38:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-27 21:38:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-27 21:38:12,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:12,084 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:38:12,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:38:12,084 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:12,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1115432797, now seen corresponding path program 1 times [2020-08-27 21:38:12,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:12,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911265877] [2020-08-27 21:38:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,507 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:38:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:38:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:38:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:38:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:38:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:38:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-27 21:38:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-27 21:38:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-27 21:38:12,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911265877] [2020-08-27 21:38:12,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:38:12,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:38:12,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598571685] [2020-08-27 21:38:12,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:38:12,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:12,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:38:12,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:38:12,784 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 13 states. [2020-08-27 21:38:13,303 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:38:13,600 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:38:13,940 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:38:15,859 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:38:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:38:18,365 INFO L93 Difference]: Finished difference Result 5433 states and 7114 transitions. [2020-08-27 21:38:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-27 21:38:18,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-27 21:38:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:38:18,387 INFO L225 Difference]: With dead ends: 5433 [2020-08-27 21:38:18,387 INFO L226 Difference]: Without dead ends: 2935 [2020-08-27 21:38:18,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-27 21:38:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-08-27 21:38:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2614. [2020-08-27 21:38:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-08-27 21:38:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3075 transitions. [2020-08-27 21:38:18,972 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3075 transitions. Word has length 162 [2020-08-27 21:38:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:38:18,973 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3075 transitions. [2020-08-27 21:38:18,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:38:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3075 transitions. [2020-08-27 21:38:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-27 21:38:18,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:38:18,981 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, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:38:18,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:38:18,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:38:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:38:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-27 21:38:18,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:38:18,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243868895] [2020-08-27 21:38:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:38:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,369 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:38:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:38:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:38:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:38:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:38:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:38:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:38:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:38:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:38:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:38:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 21:38:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:38:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-27 21:38:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-27 21:38:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:38:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:38:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:38:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-27 21:38:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-27 21:38:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:38:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-27 21:38:19,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243868895] [2020-08-27 21:38:19,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:38:19,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:38:19,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344427492] [2020-08-27 21:38:19,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:38:19,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:38:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:38:19,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:38:19,696 INFO L87 Difference]: Start difference. First operand 2614 states and 3075 transitions. Second operand 10 states. [2020-08-27 21:38:20,621 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189