/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 0.1.25-5644d1e-m [2020-08-19 06:37:43,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:37:43,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:37:43,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:37:43,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:37:43,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:37:43,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:37:43,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:37:43,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:37:43,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:37:43,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:37:43,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:37:43,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:37:43,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:37:43,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:37:43,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:37:43,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:37:43,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:37:43,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:37:43,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:37:43,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:37:43,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:37:43,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:37:43,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:37:43,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:37:43,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:37:43,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:37:43,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:37:43,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:37:43,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:37:43,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:37:43,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:37:43,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:37:43,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:37:43,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:37:43,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:37:43,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:37:43,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:37:43,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:37:43,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:37:43,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:37:43,533 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 [2020-08-19 06:37:43,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:37:43,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:37:43,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:37:43,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:37:43,559 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:37:43,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:37:43,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:37:43,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:37:43,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:37:43,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:37:43,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:37:43,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:37:43,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:37:43,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:37:43,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:37:43,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:37:43,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:37:43,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:37:43,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:37:43,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:37:43,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:37:43,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:37:43,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:37:43,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:37:43,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:37:43,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:37:43,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:37:43,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:37:43,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:37:43,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:37:43,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:37:43,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:37:43,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:37:43,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:37:43,888 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:37:43,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 06:37:43,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90261d672/cc977e524f164b4299813793a3aaa341/FLAGfd31e604a [2020-08-19 06:37:44,548 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:37:44,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-19 06:37:44,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90261d672/cc977e524f164b4299813793a3aaa341/FLAGfd31e604a [2020-08-19 06:37:44,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90261d672/cc977e524f164b4299813793a3aaa341 [2020-08-19 06:37:44,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:37:44,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:37:44,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:37:44,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:37:44,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:37:44,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:37:44" (1/1) ... [2020-08-19 06:37:44,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186d1561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:44, skipping insertion in model container [2020-08-19 06:37:44,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:37:44" (1/1) ... [2020-08-19 06:37:44,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:37:44,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:37:45,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:37:45,255 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:37:45,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:37:45,504 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:37:45,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45 WrapperNode [2020-08-19 06:37:45,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:37:45,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:37:45,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:37:45,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:37:45,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (1/1) ... [2020-08-19 06:37:45,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:37:45,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:37:45,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:37:45,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:37:45,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (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 [2020-08-19 06:37:45,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:37:45,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:37:45,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:37:45,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:37:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:37:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:37:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:37:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:37:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:37:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:37:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:37:45,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:37:45,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:37:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:37:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:37:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:37:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:37:45,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:37:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:37:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:37:45,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:37:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:37:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:37:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:37:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:37:45,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:37:45,719 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:37:45,720 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:37:45,721 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:37:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:37:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:37:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:37:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:37:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:37:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:37:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:37:46,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:37:46,967 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:37:46,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:37:46 BoogieIcfgContainer [2020-08-19 06:37:46,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:37:46,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:37:46,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:37:46,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:37:46,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:37:44" (1/3) ... [2020-08-19 06:37:46,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d040426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:37:46, skipping insertion in model container [2020-08-19 06:37:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:45" (2/3) ... [2020-08-19 06:37:46,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d040426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:37:46, skipping insertion in model container [2020-08-19 06:37:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:37:46" (3/3) ... [2020-08-19 06:37:46,982 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-19 06:37:46,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:37:47,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:37:47,013 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:37:47,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:37:47,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:37:47,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:37:47,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:37:47,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:37:47,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:37:47,036 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:37:47,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:37:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-19 06:37:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:37:47,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:47,072 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] [2020-08-19 06:37:47,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:47,079 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-19 06:37:47,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:47,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124369193] [2020-08-19 06:37:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,795 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:37:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:37:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:47,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124369193] [2020-08-19 06:37:47,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:47,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:37:47,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648018147] [2020-08-19 06:37:47,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:37:47,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:47,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:37:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:37:47,933 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-19 06:37:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:49,346 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-19 06:37:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:37:49,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 06:37:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:49,367 INFO L225 Difference]: With dead ends: 353 [2020-08-19 06:37:49,367 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 06:37:49,372 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 [2020-08-19 06:37:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 06:37:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-19 06:37:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-19 06:37:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-19 06:37:49,532 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-19 06:37:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:49,533 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-19 06:37:49,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:37:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-19 06:37:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:37:49,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:49,537 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] [2020-08-19 06:37:49,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:37:49,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-19 06:37:49,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:49,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173266839] [2020-08-19 06:37:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,862 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:37:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:49,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173266839] [2020-08-19 06:37:49,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:49,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:37:49,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002006186] [2020-08-19 06:37:49,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:37:49,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:37:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:37:49,931 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-19 06:37:50,400 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:51,606 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-19 06:37:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:37:51,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 06:37:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:51,611 INFO L225 Difference]: With dead ends: 288 [2020-08-19 06:37:51,612 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 06:37:51,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:37:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 06:37:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-19 06:37:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 06:37:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-19 06:37:51,664 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-19 06:37:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:51,664 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-19 06:37:51,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:37:51,665 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-19 06:37:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:37:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:51,667 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] [2020-08-19 06:37:51,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:37:51,668 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-19 06:37:51,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:51,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665948777] [2020-08-19 06:37:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:51,991 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:51,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:37:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:37:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:52,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665948777] [2020-08-19 06:37:52,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:52,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:37:52,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479432154] [2020-08-19 06:37:52,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:37:52,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:37:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:37:52,114 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-19 06:37:52,529 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:52,821 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:53,066 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:53,300 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:54,105 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:56,486 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-19 06:37:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:37:56,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 06:37:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:56,493 INFO L225 Difference]: With dead ends: 503 [2020-08-19 06:37:56,493 INFO L226 Difference]: Without dead ends: 382 [2020-08-19 06:37:56,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:37:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-19 06:37:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-19 06:37:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-19 06:37:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-19 06:37:56,583 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-19 06:37:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:56,584 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-19 06:37:56,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:37:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-19 06:37:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 06:37:56,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:56,587 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] [2020-08-19 06:37:56,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:37:56,588 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-19 06:37:56,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:56,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329134663] [2020-08-19 06:37:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,881 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:56,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:37:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:37:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 06:37:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:57,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329134663] [2020-08-19 06:37:57,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:57,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:37:57,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980880699] [2020-08-19 06:37:57,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:37:57,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:37:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:37:57,010 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-19 06:37:57,345 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:58,384 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:58,820 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:59,075 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:59,322 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:01,211 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-19 06:38:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:38:01,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 06:38:01,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:01,219 INFO L225 Difference]: With dead ends: 992 [2020-08-19 06:38:01,219 INFO L226 Difference]: Without dead ends: 711 [2020-08-19 06:38:01,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:38:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-19 06:38:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-19 06:38:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-19 06:38:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-19 06:38:01,370 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-19 06:38:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:01,371 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-19 06:38:01,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:38:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-19 06:38:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 06:38:01,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:01,375 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] [2020-08-19 06:38:01,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:38:01,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:01,376 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-19 06:38:01,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:01,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479676609] [2020-08-19 06:38:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,652 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:38:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:38:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 06:38:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 06:38:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:01,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479676609] [2020-08-19 06:38:01,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:01,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:38:01,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368951346] [2020-08-19 06:38:01,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:38:01,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:01,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:38:01,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:38:01,818 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-19 06:38:02,207 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:03,207 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:03,474 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:03,728 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:04,456 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:05,975 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-19 06:38:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 06:38:05,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 06:38:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:05,985 INFO L225 Difference]: With dead ends: 1565 [2020-08-19 06:38:05,985 INFO L226 Difference]: Without dead ends: 1027 [2020-08-19 06:38:05,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 06:38:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-19 06:38:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-19 06:38:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-19 06:38:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-19 06:38:06,227 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-19 06:38:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:06,230 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-19 06:38:06,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:38:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-19 06:38:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:38:06,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:06,236 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] [2020-08-19 06:38:06,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:38:06,237 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:06,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-19 06:38:06,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:06,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481427113] [2020-08-19 06:38:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,506 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:06,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:38:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:38:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 06:38:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:06,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481427113] [2020-08-19 06:38:06,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:06,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:38:06,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732441411] [2020-08-19 06:38:06,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:38:06,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:06,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:38:06,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:38:06,670 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-19 06:38:07,891 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:08,156 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:38:08,428 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:08,703 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:10,106 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-19 06:38:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:38:10,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 06:38:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:10,122 INFO L225 Difference]: With dead ends: 1894 [2020-08-19 06:38:10,122 INFO L226 Difference]: Without dead ends: 1101 [2020-08-19 06:38:10,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:38:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-19 06:38:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-19 06:38:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-19 06:38:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-19 06:38:10,293 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-19 06:38:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:10,294 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-19 06:38:10,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:38:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-19 06:38:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:38:10,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:10,297 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] [2020-08-19 06:38:10,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:38:10,297 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-19 06:38:10,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:10,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754877920] [2020-08-19 06:38:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,577 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:38:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:38:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 06:38:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:10,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754877920] [2020-08-19 06:38:10,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:10,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:38:10,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948734377] [2020-08-19 06:38:10,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:38:10,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:38:10,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:38:10,793 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-19 06:38:11,311 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:11,605 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:11,853 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:12,727 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:13,012 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:13,294 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:15,089 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-19 06:38:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:38:15,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 06:38:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:15,101 INFO L225 Difference]: With dead ends: 1948 [2020-08-19 06:38:15,101 INFO L226 Difference]: Without dead ends: 1129 [2020-08-19 06:38:15,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:38:15,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-19 06:38:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-19 06:38:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-19 06:38:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-19 06:38:15,364 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-19 06:38:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:15,364 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-19 06:38:15,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:38:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-19 06:38:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 06:38:15,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:15,369 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] [2020-08-19 06:38:15,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:38:15,369 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-19 06:38:15,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:15,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302527055] [2020-08-19 06:38:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,737 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:38:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:38:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 06:38:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:15,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302527055] [2020-08-19 06:38:15,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:15,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:15,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274081275] [2020-08-19 06:38:15,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:15,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:15,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:15,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:15,911 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-19 06:38:16,369 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:16,974 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:20,175 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-19 06:38:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:38:20,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 06:38:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:20,194 INFO L225 Difference]: With dead ends: 2919 [2020-08-19 06:38:20,194 INFO L226 Difference]: Without dead ends: 2084 [2020-08-19 06:38:20,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 06:38:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-19 06:38:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-19 06:38:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 06:38:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-19 06:38:20,589 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-19 06:38:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:20,589 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-19 06:38:20,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-19 06:38:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 06:38:20,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:20,593 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] [2020-08-19 06:38:20,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:38:20,593 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:20,594 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-19 06:38:20,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:20,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477999368] [2020-08-19 06:38:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,874 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 06:38:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 06:38:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 06:38:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:20,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477999368] [2020-08-19 06:38:20,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:20,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:21,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614244709] [2020-08-19 06:38:21,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:21,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:21,001 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-19 06:38:21,489 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:24,850 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-19 06:38:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 06:38:24,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 06:38:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:24,874 INFO L225 Difference]: With dead ends: 3491 [2020-08-19 06:38:24,874 INFO L226 Difference]: Without dead ends: 3488 [2020-08-19 06:38:24,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 06:38:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-19 06:38:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-19 06:38:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-19 06:38:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-19 06:38:25,642 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-19 06:38:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:25,643 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-19 06:38:25,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-19 06:38:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 06:38:25,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:25,660 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] [2020-08-19 06:38:25,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:38:25,660 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:25,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1115432797, now seen corresponding path program 1 times [2020-08-19 06:38:25,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:25,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461603708] [2020-08-19 06:38:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,029 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:38:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 06:38:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 06:38:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-19 06:38:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 06:38:26,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461603708] [2020-08-19 06:38:26,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:38:26,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 06:38:26,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313626776] [2020-08-19 06:38:26,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:38:26,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:38:26,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:38:26,321 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 13 states. [2020-08-19 06:38:26,915 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:27,152 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:27,444 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:29,165 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:31,388 INFO L93 Difference]: Finished difference Result 5433 states and 7114 transitions. [2020-08-19 06:38:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 06:38:31,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-19 06:38:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:31,408 INFO L225 Difference]: With dead ends: 5433 [2020-08-19 06:38:31,408 INFO L226 Difference]: Without dead ends: 2935 [2020-08-19 06:38:31,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 06:38:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-08-19 06:38:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2614. [2020-08-19 06:38:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-08-19 06:38:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3075 transitions. [2020-08-19 06:38:31,917 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3075 transitions. Word has length 162 [2020-08-19 06:38:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:31,917 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3075 transitions. [2020-08-19 06:38:31,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:38:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3075 transitions. [2020-08-19 06:38:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-19 06:38:31,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:31,926 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] [2020-08-19 06:38:31,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:38:31,927 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:31,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-19 06:38:31,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:31,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200984116] [2020-08-19 06:38:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,354 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:38:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:38:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 06:38:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 06:38:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 06:38:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 06:38:32,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200984116] [2020-08-19 06:38:32,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:38:32,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 06:38:32,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294110007] [2020-08-19 06:38:32,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:38:32,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:38:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:38:32,647 INFO L87 Difference]: Start difference. First operand 2614 states and 3075 transitions. Second operand 10 states. [2020-08-19 06:38:33,549 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:35,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:35,995 INFO L93 Difference]: Finished difference Result 4369 states and 5351 transitions. [2020-08-19 06:38:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 06:38:35,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-19 06:38:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:36,007 INFO L225 Difference]: With dead ends: 4369 [2020-08-19 06:38:36,007 INFO L226 Difference]: Without dead ends: 1783 [2020-08-19 06:38:36,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 06:38:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2020-08-19 06:38:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1328. [2020-08-19 06:38:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-19 06:38:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1543 transitions. [2020-08-19 06:38:36,254 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1543 transitions. Word has length 171 [2020-08-19 06:38:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:36,255 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1543 transitions. [2020-08-19 06:38:36,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:38:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1543 transitions. [2020-08-19 06:38:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 06:38:36,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:36,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:36,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:38:36,260 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-19 06:38:36,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:36,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910902433] [2020-08-19 06:38:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,560 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:38:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 06:38:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 06:38:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:38:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:38:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 06:38:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:36,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 06:38:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 06:38:37,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910902433] [2020-08-19 06:38:37,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:38:37,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 06:38:37,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143824336] [2020-08-19 06:38:37,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 06:38:37,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:37,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 06:38:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:38:37,007 INFO L87 Difference]: Start difference. First operand 1328 states and 1543 transitions. Second operand 19 states. [2020-08-19 06:38:37,974 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:38,315 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:38,608 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:38,916 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:39,718 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:40,337 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:40,750 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191