/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:20:33,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:20:33,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:20:33,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:20:33,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:20:33,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:20:33,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:20:33,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:20:33,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:20:33,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:20:33,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:20:33,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:20:33,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:20:33,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:20:33,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:20:33,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:20:33,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:20:33,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:20:33,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:20:33,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:20:33,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:20:33,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:20:33,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:20:33,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:20:33,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:20:33,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:20:33,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:20:33,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:20:33,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:20:33,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:20:33,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:20:33,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:20:33,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:20:33,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:20:33,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:20:33,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:20:33,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:20:33,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:20:33,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:20:33,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:20:33,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:20:33,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:20:33,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:20:33,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:20:33,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:20:33,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:20:33,748 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:20:33,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:20:33,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:20:33,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:20:33,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:20:33,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:20:33,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:20:33,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:20:33,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:20:33,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:20:33,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:20:33,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:20:33,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:20:33,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:20:33,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:20:33,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:20:33,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:20:33,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:20:33,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:20:33,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:20:33,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:20:33,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:20:33,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:20:33,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:20:33,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:20:33,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:20:34,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:20:34,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:20:34,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:20:34,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:20:34,054 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:20:34,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 10:20:34,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3614c7f4/4730ab4d41fc46c1be76e299210e657d/FLAGf663ae403 [2020-08-18 10:20:34,627 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:20:34,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 10:20:34,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3614c7f4/4730ab4d41fc46c1be76e299210e657d/FLAGf663ae403 [2020-08-18 10:20:34,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3614c7f4/4730ab4d41fc46c1be76e299210e657d [2020-08-18 10:20:34,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:20:34,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:20:34,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:34,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:20:35,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:20:35,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:34" (1/1) ... [2020-08-18 10:20:35,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35, skipping insertion in model container [2020-08-18 10:20:35,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:20:34" (1/1) ... [2020-08-18 10:20:35,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:20:35,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:20:35,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:35,498 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:20:35,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:20:35,614 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:20:35,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35 WrapperNode [2020-08-18 10:20:35,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:20:35,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:20:35,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:20:35,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:20:35,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... [2020-08-18 10:20:35,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:20:35,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:20:35,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:20:35,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:20:35,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:20:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:20:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:20:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:20:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:20:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:20:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:20:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:20:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:20:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:20:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:20:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:20:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:20:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:20:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:20:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:20:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:20:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:20:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:20:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:20:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:20:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:20:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:20:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:20:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:20:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:20:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:20:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:20:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:20:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 10:20:35,825 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 10:20:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:20:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:20:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:20:35,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:20:36,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:20:36,915 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:20:36,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:36 BoogieIcfgContainer [2020-08-18 10:20:36,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:20:36,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:20:36,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:20:36,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:20:36,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:20:34" (1/3) ... [2020-08-18 10:20:36,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328f5659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:36, skipping insertion in model container [2020-08-18 10:20:36,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:20:35" (2/3) ... [2020-08-18 10:20:36,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328f5659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:20:36, skipping insertion in model container [2020-08-18 10:20:36,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:20:36" (3/3) ... [2020-08-18 10:20:36,937 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-18 10:20:36,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:20:36,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:20:36,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:20:36,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:20:36,993 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:20:36,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:20:36,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:20:36,994 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:20:36,994 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:20:36,994 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:20:36,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:20:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 10:20:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:20:37,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:37,031 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] [2020-08-18 10:20:37,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-18 10:20:37,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:37,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748231756] [2020-08-18 10:20:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,706 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:20:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:37,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748231756] [2020-08-18 10:20:37,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:37,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:20:37,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49922519] [2020-08-18 10:20:37,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:20:37,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:37,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:20:37,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:37,829 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 10:20:39,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:39,034 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-18 10:20:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:20:39,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 10:20:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:39,053 INFO L225 Difference]: With dead ends: 312 [2020-08-18 10:20:39,053 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 10:20:39,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:20:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 10:20:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-18 10:20:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 10:20:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 10:20:39,169 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-18 10:20:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:39,170 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 10:20:39,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:20:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 10:20:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:20:39,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:39,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:39,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:20:39,183 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-18 10:20:39,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:39,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709516678] [2020-08-18 10:20:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,602 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:20:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:20:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:39,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709516678] [2020-08-18 10:20:39,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:39,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:20:39,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367341497] [2020-08-18 10:20:39,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:20:39,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:20:39,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:20:39,708 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-18 10:20:40,182 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:41,177 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-18 10:20:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:20:41,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 10:20:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:41,181 INFO L225 Difference]: With dead ends: 253 [2020-08-18 10:20:41,183 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 10:20:41,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:20:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 10:20:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 10:20:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 10:20:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-18 10:20:41,234 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-18 10:20:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:41,235 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-18 10:20:41,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:20:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-18 10:20:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:20:41,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:41,237 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] [2020-08-18 10:20:41,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:20:41,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-18 10:20:41,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:41,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026073016] [2020-08-18 10:20:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,599 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:41,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:20:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:20:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:41,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026073016] [2020-08-18 10:20:41,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:41,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:20:41,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884761766] [2020-08-18 10:20:41,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:20:41,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:41,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:20:41,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:20:41,748 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-18 10:20:42,132 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:42,476 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:42,716 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:42,961 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:44,286 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-18 10:20:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:20:44,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 10:20:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:44,293 INFO L225 Difference]: With dead ends: 266 [2020-08-18 10:20:44,294 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 10:20:44,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:20:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 10:20:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 10:20:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 10:20:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 10:20:44,377 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-18 10:20:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:44,379 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 10:20:44,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:20:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 10:20:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 10:20:44,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:44,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:44,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:20:44,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-18 10:20:44,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:44,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419017797] [2020-08-18 10:20:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,746 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:20:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:20:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:20:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:44,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419017797] [2020-08-18 10:20:44,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:44,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:20:44,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041679608] [2020-08-18 10:20:44,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:20:44,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:44,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:20:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:20:44,862 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-18 10:20:45,144 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:46,335 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:46,998 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-18 10:20:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:20:47,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 10:20:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:47,006 INFO L225 Difference]: With dead ends: 370 [2020-08-18 10:20:47,006 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 10:20:47,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:20:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 10:20:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-18 10:20:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-18 10:20:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-18 10:20:47,106 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-18 10:20:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:47,107 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-18 10:20:47,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:20:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-18 10:20:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:20:47,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:47,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:47,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:20:47,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-18 10:20:47,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:47,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422792140] [2020-08-18 10:20:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,381 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:20:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:20:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:20:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:47,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422792140] [2020-08-18 10:20:47,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:47,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:20:47,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281027497] [2020-08-18 10:20:47,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:20:47,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:20:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:20:47,479 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-18 10:20:47,850 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:48,885 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:49,214 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:49,760 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:50,043 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:51,186 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-18 10:20:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:20:51,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 10:20:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:51,192 INFO L225 Difference]: With dead ends: 653 [2020-08-18 10:20:51,192 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 10:20:51,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 10:20:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 10:20:51,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-18 10:20:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-18 10:20:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-18 10:20:51,278 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-18 10:20:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:51,278 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-18 10:20:51,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:20:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-18 10:20:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:20:51,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:51,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:51,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:20:51,281 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:51,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-18 10:20:51,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:51,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256465183] [2020-08-18 10:20:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,586 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:20:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:20:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:20:51,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256465183] [2020-08-18 10:20:51,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:51,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:20:51,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664395946] [2020-08-18 10:20:51,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:20:51,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:51,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:20:51,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:20:51,709 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-18 10:20:52,100 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:53,277 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:20:54,358 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:54,613 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:54,884 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:55,306 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-18 10:20:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:20:55,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 10:20:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:55,312 INFO L225 Difference]: With dead ends: 858 [2020-08-18 10:20:55,312 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 10:20:55,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:20:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 10:20:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 10:20:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 10:20:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-18 10:20:55,402 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-18 10:20:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:55,403 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-18 10:20:55,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:20:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-18 10:20:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 10:20:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:55,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:55,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:20:55,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-18 10:20:55,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:55,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274008600] [2020-08-18 10:20:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,726 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:20:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:20:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:20:55,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274008600] [2020-08-18 10:20:55,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:55,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:20:55,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508990665] [2020-08-18 10:20:55,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:20:55,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:55,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:20:55,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:20:55,973 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-18 10:20:56,968 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:20:57,219 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:20:57,468 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:57,696 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:20:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:20:58,880 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-18 10:20:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:20:58,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-18 10:20:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:20:58,884 INFO L225 Difference]: With dead ends: 865 [2020-08-18 10:20:58,885 INFO L226 Difference]: Without dead ends: 508 [2020-08-18 10:20:58,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:20:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-18 10:20:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-18 10:20:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-18 10:20:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-18 10:20:58,956 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-18 10:20:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:20:58,956 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-18 10:20:58,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:20:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-18 10:20:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 10:20:58,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:20:58,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:20:58,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:20:58,959 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:20:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:20:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-18 10:20:58,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:20:58,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424501320] [2020-08-18 10:20:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:20:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,239 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:20:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:20:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:20:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:20:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:20:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:20:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:20:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:20:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:20:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:20:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:20:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:20:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:20:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:20:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:20:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:20:59,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424501320] [2020-08-18 10:20:59,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:20:59,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:20:59,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209052945] [2020-08-18 10:20:59,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:20:59,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:20:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:20:59,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:20:59,464 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-18 10:21:00,286 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:00,517 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:00,742 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:01,454 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:01,723 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:01,956 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:21:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:03,280 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-18 10:21:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:21:03,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-18 10:21:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:03,286 INFO L225 Difference]: With dead ends: 885 [2020-08-18 10:21:03,286 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 10:21:03,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:21:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 10:21:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-18 10:21:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-18 10:21:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-18 10:21:03,359 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-18 10:21:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:03,359 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-18 10:21:03,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:21:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-18 10:21:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 10:21:03,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:03,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:03,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:21:03,361 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-18 10:21:03,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:03,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595985258] [2020-08-18 10:21:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,679 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:21:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:21:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:21:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:21:03,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595985258] [2020-08-18 10:21:03,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:03,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:03,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964902122] [2020-08-18 10:21:03,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:03,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:03,928 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-18 10:21:04,335 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:04,852 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:07,228 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-18 10:21:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:21:07,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-18 10:21:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:07,235 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 10:21:07,236 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 10:21:07,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:21:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 10:21:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-18 10:21:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-18 10:21:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-18 10:21:07,378 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-18 10:21:07,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:07,379 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-18 10:21:07,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-18 10:21:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 10:21:07,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:07,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:07,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:21:07,383 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:07,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:07,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-18 10:21:07,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:07,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402774055] [2020-08-18 10:21:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,674 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:07,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:21:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:08,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:21:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:21:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:21:08,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402774055] [2020-08-18 10:21:08,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:21:08,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 10:21:08,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938376779] [2020-08-18 10:21:08,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 10:21:08,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:08,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 10:21:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:21:08,045 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-18 10:21:08,530 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:08,911 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 10:21:09,163 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:09,417 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:10,136 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:11,226 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:11,537 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:11,811 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:12,088 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:12,422 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:12,709 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:13,267 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 10:21:13,863 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 10:21:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:16,151 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-18 10:21:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 10:21:16,151 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-18 10:21:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:16,157 INFO L225 Difference]: With dead ends: 1515 [2020-08-18 10:21:16,157 INFO L226 Difference]: Without dead ends: 830 [2020-08-18 10:21:16,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 10:21:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-18 10:21:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-18 10:21:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-18 10:21:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-18 10:21:16,298 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-18 10:21:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:16,298 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-18 10:21:16,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 10:21:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-18 10:21:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 10:21:16,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:16,301 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 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] [2020-08-18 10:21:16,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:21:16,301 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:16,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:16,302 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-18 10:21:16,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:16,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437796591] [2020-08-18 10:21:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,593 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:21:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:21:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:21:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:21:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 10:21:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:21:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:21:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:21:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:21:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 10:21:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 10:21:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 10:21:16,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437796591] [2020-08-18 10:21:16,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:21:16,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 10:21:16,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907209096] [2020-08-18 10:21:16,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 10:21:16,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:16,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 10:21:16,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:21:16,890 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-18 10:21:17,343 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:17,711 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 10:21:17,986 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:18,249 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:21:19,044 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:21:20,153 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:20,489 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:20,766 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:21,053 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:21,385 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:21,656 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:22,989 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:23,239 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:23,524 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:23,779 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:21:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:24,738 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-18 10:21:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 10:21:24,738 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-18 10:21:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:24,740 INFO L225 Difference]: With dead ends: 1298 [2020-08-18 10:21:24,740 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:21:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 10:21:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:21:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:21:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:21:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:21:24,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 10:21:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:24,747 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:21:24,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 10:21:24,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:21:24,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:21:24,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:21:24,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:21:26,945 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 10:21:29,622 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 278 [2020-08-18 10:21:30,048 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 10:21:30,530 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 10:21:32,039 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-18 10:21:32,298 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-18 10:21:32,780 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-18 10:21:33,280 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-18 10:21:33,442 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1