/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:06:54,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:06:54,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:06:54,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:06:54,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:06:54,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:06:54,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:06:54,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:06:54,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:06:54,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:06:54,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:06:54,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:06:54,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:06:54,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:06:54,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:06:54,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:06:54,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:06:54,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:06:54,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:06:54,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:06:54,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:06:54,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:06:54,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:06:54,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:06:54,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:06:54,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:06:54,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:06:54,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:06:54,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:06:54,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:06:54,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:06:54,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:06:54,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:06:54,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:06:54,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:06:54,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:06:54,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:06:54,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:06:54,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:06:54,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:06:54,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:06:54,576 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 [2020-08-22 02:06:54,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:06:54,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:06:54,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:06:54,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:06:54,604 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:06:54,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:06:54,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:06:54,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:06:54,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:06:54,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:06:54,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:06:54,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:06:54,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:06:54,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:06:54,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:06:54,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:06:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:06:54,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:06:54,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:06:54,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:06:54,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:06:54,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:06:54,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:06:54,955 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:06:54,956 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 02:06:55,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2a310cca/b7a623b8ff4d472ea0a7289c6ed59f3e/FLAG84647ea2d [2020-08-22 02:06:55,686 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:06:55,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 02:06:55,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2a310cca/b7a623b8ff4d472ea0a7289c6ed59f3e/FLAG84647ea2d [2020-08-22 02:06:55,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2a310cca/b7a623b8ff4d472ea0a7289c6ed59f3e [2020-08-22 02:06:55,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:06:55,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:06:55,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:55,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:06:55,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:06:55,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:55" (1/1) ... [2020-08-22 02:06:55,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d2a1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:55, skipping insertion in model container [2020-08-22 02:06:55,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:06:55" (1/1) ... [2020-08-22 02:06:55,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:06:55,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:06:56,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:56,425 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:06:56,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:06:56,548 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:06:56,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56 WrapperNode [2020-08-22 02:06:56,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:06:56,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:06:56,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:06:56,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:06:56,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (1/1) ... [2020-08-22 02:06:56,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:06:56,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:06:56,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:06:56,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:06:56,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (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 [2020-08-22 02:06:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:06:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:06:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:06:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:06:56,733 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:06:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:06:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:06:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:06:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:06:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:06:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:06:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:06:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:06:56,738 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:06:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:06:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:06:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:06:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:06:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:06:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:06:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:06:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:06:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:06:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:06:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:06:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:06:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:06:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:06:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:06:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:06:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:06:57,972 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:06:57,972 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:06:57,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:57 BoogieIcfgContainer [2020-08-22 02:06:57,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:06:57,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:06:57,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:06:57,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:06:57,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:06:55" (1/3) ... [2020-08-22 02:06:57,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc3c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:57, skipping insertion in model container [2020-08-22 02:06:57,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:06:56" (2/3) ... [2020-08-22 02:06:57,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc3c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:06:57, skipping insertion in model container [2020-08-22 02:06:57,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:06:57" (3/3) ... [2020-08-22 02:06:57,986 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-22 02:06:57,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:06:58,006 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:06:58,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:06:58,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:06:58,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:06:58,047 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:06:58,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:06:58,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:06:58,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:06:58,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:06:58,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:06:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 02:06:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:06:58,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:58,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:58,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:58,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-22 02:06:58,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:58,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587734095] [2020-08-22 02:06:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,828 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:06:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:58,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587734095] [2020-08-22 02:06:58,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:58,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:06:58,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108261213] [2020-08-22 02:06:58,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:06:58,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:06:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:06:58,993 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-22 02:07:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:00,311 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-22 02:07:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:07:00,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:07:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:00,342 INFO L225 Difference]: With dead ends: 365 [2020-08-22 02:07:00,342 INFO L226 Difference]: Without dead ends: 197 [2020-08-22 02:07:00,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:07:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-22 02:07:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-22 02:07:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 02:07:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-22 02:07:00,514 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-22 02:07:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:00,515 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-22 02:07:00,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:07:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-22 02:07:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:07:00,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:00,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:00,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:07:00,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-22 02:07:00,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:00,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392335831] [2020-08-22 02:07:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,851 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:07:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:07:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:07:00,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392335831] [2020-08-22 02:07:00,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:07:00,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:07:00,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714982903] [2020-08-22 02:07:00,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:07:00,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:07:00,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:07:00,896 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-22 02:07:01,379 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:02,485 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-22 02:07:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:07:02,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:07:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:02,489 INFO L225 Difference]: With dead ends: 292 [2020-08-22 02:07:02,489 INFO L226 Difference]: Without dead ends: 181 [2020-08-22 02:07:02,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:07:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-22 02:07:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-22 02:07:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 02:07:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-22 02:07:02,532 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-22 02:07:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:02,533 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-22 02:07:02,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:07:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-22 02:07:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:07:02,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:02,535 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] [2020-08-22 02:07:02,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:07:02,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-22 02:07:02,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:02,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629037970] [2020-08-22 02:07:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,867 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:07:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:07:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:07:02,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629037970] [2020-08-22 02:07:02,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:07:02,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:07:02,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265659472] [2020-08-22 02:07:02,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:07:02,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:07:02,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:07:02,990 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-22 02:07:03,307 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:03,611 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:03,861 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:04,111 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:04,791 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:07,077 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-22 02:07:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:07:07,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:07:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:07,085 INFO L225 Difference]: With dead ends: 510 [2020-08-22 02:07:07,085 INFO L226 Difference]: Without dead ends: 384 [2020-08-22 02:07:07,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:07:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-22 02:07:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-22 02:07:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-22 02:07:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-22 02:07:07,166 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-22 02:07:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:07,167 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-22 02:07:07,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:07:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-22 02:07:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:07:07,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:07,169 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] [2020-08-22 02:07:07,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:07:07,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-22 02:07:07,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:07,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21049122] [2020-08-22 02:07:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,572 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:07:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:07:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:07:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:07:07,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21049122] [2020-08-22 02:07:07,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:07:07,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:07:07,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394529044] [2020-08-22 02:07:07,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:07:07,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:07,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:07:07,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:07,692 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-22 02:07:08,055 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:08,375 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:08,631 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:08,897 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:09,432 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:10,290 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:10,719 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:11,037 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:11,285 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:11,574 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:11,954 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:12,325 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:12,751 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:15,175 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-22 02:07:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:07:15,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 02:07:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:15,188 INFO L225 Difference]: With dead ends: 1305 [2020-08-22 02:07:15,188 INFO L226 Difference]: Without dead ends: 1011 [2020-08-22 02:07:15,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:07:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-22 02:07:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-22 02:07:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-22 02:07:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-22 02:07:15,443 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-22 02:07:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:15,445 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-22 02:07:15,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:07:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-22 02:07:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:07:15,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:15,450 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] [2020-08-22 02:07:15,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:07:15,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-22 02:07:15,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:15,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334064744] [2020-08-22 02:07:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,776 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:07:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:07:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:07:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:07:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:07:15,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334064744] [2020-08-22 02:07:15,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:07:15,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:07:15,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848122202] [2020-08-22 02:07:15,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:07:15,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:07:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:07:15,845 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-22 02:07:16,143 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:18,261 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-22 02:07:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:07:18,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 02:07:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:18,277 INFO L225 Difference]: With dead ends: 2165 [2020-08-22 02:07:18,278 INFO L226 Difference]: Without dead ends: 1279 [2020-08-22 02:07:18,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:07:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-22 02:07:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-22 02:07:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-22 02:07:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-22 02:07:18,658 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-22 02:07:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:18,659 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-22 02:07:18,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:07:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-22 02:07:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:07:18,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:18,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:18,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:07:18,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-22 02:07:18,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:18,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656615659] [2020-08-22 02:07:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:18,986 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:07:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:07:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:07:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:07:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:07:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 02:07:19,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656615659] [2020-08-22 02:07:19,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:19,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:07:19,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562533439] [2020-08-22 02:07:19,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:07:19,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:07:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:07:19,124 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-22 02:07:19,653 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 02:07:20,238 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:22,411 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:24,774 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-22 02:07:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:07:24,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 02:07:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:24,785 INFO L225 Difference]: With dead ends: 2279 [2020-08-22 02:07:24,785 INFO L226 Difference]: Without dead ends: 1402 [2020-08-22 02:07:24,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 02:07:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-22 02:07:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-22 02:07:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 02:07:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-22 02:07:25,039 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-22 02:07:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:25,041 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-22 02:07:25,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:07:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-22 02:07:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 02:07:25,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:25,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:25,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:07:25,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-22 02:07:25,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:25,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688994137] [2020-08-22 02:07:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,308 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:07:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:07:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 02:07:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:07:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 02:07:25,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688994137] [2020-08-22 02:07:25,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:25,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 02:07:25,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892652104] [2020-08-22 02:07:25,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:07:25,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:25,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:07:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:07:25,491 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-22 02:07:26,369 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:26,587 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:26,833 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:28,128 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-22 02:07:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 02:07:28,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-22 02:07:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:28,137 INFO L225 Difference]: With dead ends: 2395 [2020-08-22 02:07:28,138 INFO L226 Difference]: Without dead ends: 1428 [2020-08-22 02:07:28,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-22 02:07:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-22 02:07:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 02:07:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-22 02:07:28,427 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-22 02:07:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:28,427 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-22 02:07:28,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:07:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-22 02:07:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 02:07:28,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:28,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:28,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:07:28,433 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:28,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-08-22 02:07:28,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:28,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172105781] [2020-08-22 02:07:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,685 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:07:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:07:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 02:07:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 02:07:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 02:07:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 02:07:28,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172105781] [2020-08-22 02:07:28,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:28,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:07:28,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698355144] [2020-08-22 02:07:28,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:07:28,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:07:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:07:28,893 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 10 states. [2020-08-22 02:07:29,847 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:30,114 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:07:30,349 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:30,606 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:31,875 INFO L93 Difference]: Finished difference Result 2729 states and 3518 transitions. [2020-08-22 02:07:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:07:31,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-08-22 02:07:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:31,886 INFO L225 Difference]: With dead ends: 2729 [2020-08-22 02:07:31,887 INFO L226 Difference]: Without dead ends: 1448 [2020-08-22 02:07:31,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:07:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2020-08-22 02:07:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1325. [2020-08-22 02:07:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-08-22 02:07:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1627 transitions. [2020-08-22 02:07:32,206 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1627 transitions. Word has length 146 [2020-08-22 02:07:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:32,208 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1627 transitions. [2020-08-22 02:07:32,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:07:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1627 transitions. [2020-08-22 02:07:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 02:07:32,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:32,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:32,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:07:32,214 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:32,214 INFO L82 PathProgramCache]: Analyzing trace with hash 502690489, now seen corresponding path program 1 times [2020-08-22 02:07:32,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:32,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897067137] [2020-08-22 02:07:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,533 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:32,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:07:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:07:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 02:07:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 02:07:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 02:07:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 02:07:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897067137] [2020-08-22 02:07:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:32,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:07:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504796881] [2020-08-22 02:07:32,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:07:32,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:07:32,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:32,834 INFO L87 Difference]: Start difference. First operand 1325 states and 1627 transitions. Second operand 12 states. [2020-08-22 02:07:33,500 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:33,856 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:34,172 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:34,889 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:35,130 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:35,369 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:36,544 INFO L93 Difference]: Finished difference Result 2441 states and 3101 transitions. [2020-08-22 02:07:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:07:36,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-08-22 02:07:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:36,555 INFO L225 Difference]: With dead ends: 2441 [2020-08-22 02:07:36,556 INFO L226 Difference]: Without dead ends: 1140 [2020-08-22 02:07:36,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:07:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-08-22 02:07:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1084. [2020-08-22 02:07:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-08-22 02:07:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1312 transitions. [2020-08-22 02:07:36,763 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1312 transitions. Word has length 146 [2020-08-22 02:07:36,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:36,764 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1312 transitions. [2020-08-22 02:07:36,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:07:36,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1312 transitions. [2020-08-22 02:07:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 02:07:36,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:36,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:36,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:07:36,768 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:36,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-22 02:07:36,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:36,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565336685] [2020-08-22 02:07:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,140 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:07:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:07:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 02:07:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:07:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 02:07:37,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565336685] [2020-08-22 02:07:37,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:37,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:07:37,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213276294] [2020-08-22 02:07:37,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:07:37,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:07:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:07:37,502 INFO L87 Difference]: Start difference. First operand 1084 states and 1312 transitions. Second operand 15 states. [2020-08-22 02:07:37,917 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:38,659 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:40,194 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:40,491 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:40,769 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:41,033 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:41,318 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:41,555 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:42,033 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 02:07:42,567 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 02:07:43,223 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:43,446 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:43,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:43,960 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:44,961 INFO L93 Difference]: Finished difference Result 3005 states and 3774 transitions. [2020-08-22 02:07:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 02:07:44,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-22 02:07:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:44,973 INFO L225 Difference]: With dead ends: 3005 [2020-08-22 02:07:44,973 INFO L226 Difference]: Without dead ends: 1945 [2020-08-22 02:07:44,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 02:07:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-08-22 02:07:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1843. [2020-08-22 02:07:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-22 02:07:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2184 transitions. [2020-08-22 02:07:45,368 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2184 transitions. Word has length 150 [2020-08-22 02:07:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:45,370 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2184 transitions. [2020-08-22 02:07:45,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:07:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2184 transitions. [2020-08-22 02:07:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 02:07:45,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:45,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:45,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:07:45,376 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-22 02:07:45,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:45,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594157297] [2020-08-22 02:07:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,660 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:07:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:07:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 02:07:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 02:07:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 02:07:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 02:07:45,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594157297] [2020-08-22 02:07:45,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:45,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 02:07:45,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084385829] [2020-08-22 02:07:45,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:07:45,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:45,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:07:45,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:07:45,834 INFO L87 Difference]: Start difference. First operand 1843 states and 2184 transitions. Second operand 11 states. [2020-08-22 02:07:46,266 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:48,494 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:48,796 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:49,062 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:07:49,437 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:49,716 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:07:50,141 INFO L93 Difference]: Finished difference Result 2160 states and 2739 transitions. [2020-08-22 02:07:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 02:07:50,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-22 02:07:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:07:50,153 INFO L225 Difference]: With dead ends: 2160 [2020-08-22 02:07:50,153 INFO L226 Difference]: Without dead ends: 2157 [2020-08-22 02:07:50,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:07:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-22 02:07:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1843. [2020-08-22 02:07:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-22 02:07:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2174 transitions. [2020-08-22 02:07:50,554 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2174 transitions. Word has length 154 [2020-08-22 02:07:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:07:50,554 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2174 transitions. [2020-08-22 02:07:50,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:07:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2174 transitions. [2020-08-22 02:07:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 02:07:50,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:07:50,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:07:50,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:07:50,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:07:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:07:50,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-22 02:07:50,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:07:50,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661157749] [2020-08-22 02:07:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:07:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,880 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:07:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:07:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:07:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:07:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:07:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:07:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:07:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:07:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:07:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:07:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:07:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:07:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:07:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:07:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:07:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:07:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 02:07:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 02:07:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:07:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 02:07:51,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661157749] [2020-08-22 02:07:51,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:07:51,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:07:51,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563443938] [2020-08-22 02:07:51,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:07:51,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:07:51,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:07:51,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:07:51,114 INFO L87 Difference]: Start difference. First operand 1843 states and 2174 transitions. Second operand 12 states. [2020-08-22 02:07:51,448 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:07:52,290 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:07:52,561 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:52,821 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:07:53,051 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:53,430 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:07:53,644 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188