/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:26:42,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:26:42,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:26:42,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:26:42,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:26:42,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:26:42,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:26:42,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:26:42,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:26:42,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:26:42,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:26:42,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:26:42,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:26:42,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:26:42,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:26:42,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:26:42,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:26:42,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:26:42,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:26:42,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:26:42,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:26:42,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:26:42,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:26:42,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:26:42,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:26:42,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:26:42,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:26:42,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:26:42,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:26:42,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:26:42,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:26:42,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:26:42,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:26:42,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:26:42,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:26:42,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:26:42,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:26:42,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:26:42,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:26:42,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:26:42,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:26:42,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:26:42,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:26:42,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:26:42,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:26:42,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:26:42,603 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:26:42,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:26:42,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:26:42,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:26:42,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:26:42,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:26:42,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:26:42,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:26:42,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:26:42,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:26:42,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:26:42,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:26:42,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:26:42,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:26:42,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:26:42,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:26:42,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:26:42,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:26:42,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:26:42,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:26:42,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:26:42,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:26:42,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:26:42,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:26:42,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:26:42,946 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:26:42,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-19 03:26:43,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056481e5c/55b132dc403d4ec2b31ca0652730857b/FLAGce8c11358 [2020-08-19 03:26:43,599 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:26:43,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-19 03:26:43,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056481e5c/55b132dc403d4ec2b31ca0652730857b/FLAGce8c11358 [2020-08-19 03:26:43,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056481e5c/55b132dc403d4ec2b31ca0652730857b [2020-08-19 03:26:43,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:26:43,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:26:43,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:26:43,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:26:43,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:26:43,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:26:43" (1/1) ... [2020-08-19 03:26:43,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:43, skipping insertion in model container [2020-08-19 03:26:43,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:26:43" (1/1) ... [2020-08-19 03:26:43,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:26:43,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:26:44,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:26:44,340 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:26:44,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:26:44,585 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:26:44,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44 WrapperNode [2020-08-19 03:26:44,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:26:44,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:26:44,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:26:44,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:26:44,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... [2020-08-19 03:26:44,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:26:44,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:26:44,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:26:44,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:26:44,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:26:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:26:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:26:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:26:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:26:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:26:44,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:26:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:26:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:26:44,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:26:44,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:26:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:26:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:26:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:26:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:26:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:26:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:26:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:26:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:26:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:26:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:26:44,769 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:26:44,770 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:26:44,771 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:26:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:26:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:26:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:26:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:26:45,896 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:26:45,896 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:26:45,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:26:45 BoogieIcfgContainer [2020-08-19 03:26:45,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:26:45,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:26:45,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:26:45,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:26:45,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:26:43" (1/3) ... [2020-08-19 03:26:45,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b44703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:26:45, skipping insertion in model container [2020-08-19 03:26:45,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:44" (2/3) ... [2020-08-19 03:26:45,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b44703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:26:45, skipping insertion in model container [2020-08-19 03:26:45,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:26:45" (3/3) ... [2020-08-19 03:26:45,915 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-19 03:26:45,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:26:45,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:26:45,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:26:45,979 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:26:45,979 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:26:45,979 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:26:45,980 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:26:45,980 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:26:45,980 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:26:45,980 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:26:45,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:26:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 03:26:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:26:46,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:46,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:46,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:46,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-19 03:26:46,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:46,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650549196] [2020-08-19 03:26:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,757 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:26:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:26:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:46,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650549196] [2020-08-19 03:26:46,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:46,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:26:46,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248867188] [2020-08-19 03:26:46,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:26:46,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:46,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:26:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:26:46,860 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-19 03:26:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:48,219 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-19 03:26:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:26:48,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:26:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:48,236 INFO L225 Difference]: With dead ends: 307 [2020-08-19 03:26:48,236 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 03:26:48,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:26:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 03:26:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-19 03:26:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 03:26:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-19 03:26:48,334 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-19 03:26:48,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:48,335 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-19 03:26:48,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:26:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-19 03:26:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:26:48,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:48,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:48,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:26:48,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:48,340 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-19 03:26:48,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:48,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925851846] [2020-08-19 03:26:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,635 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:26:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:26:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:48,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925851846] [2020-08-19 03:26:48,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:48,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:26:48,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331931546] [2020-08-19 03:26:48,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:26:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:26:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:26:48,718 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-19 03:26:49,172 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:26:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:50,011 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-19 03:26:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:26:50,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:26:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:50,022 INFO L225 Difference]: With dead ends: 234 [2020-08-19 03:26:50,022 INFO L226 Difference]: Without dead ends: 150 [2020-08-19 03:26:50,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:26:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-19 03:26:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-19 03:26:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 03:26:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 03:26:50,084 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-19 03:26:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:50,085 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 03:26:50,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:26:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 03:26:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:26:50,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:50,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:50,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:26:50,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-19 03:26:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:50,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259137531] [2020-08-19 03:26:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,462 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:26:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:26:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:50,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259137531] [2020-08-19 03:26:50,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:50,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:26:50,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168371760] [2020-08-19 03:26:50,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:26:50,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:26:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:26:50,586 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-19 03:26:50,967 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:26:51,267 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:51,507 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:51,764 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:52,460 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:26:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:54,193 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-19 03:26:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:26:54,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:26:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:54,200 INFO L225 Difference]: With dead ends: 421 [2020-08-19 03:26:54,200 INFO L226 Difference]: Without dead ends: 322 [2020-08-19 03:26:54,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:26:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-19 03:26:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-19 03:26:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 03:26:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-19 03:26:54,296 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-19 03:26:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:54,297 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-19 03:26:54,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:26:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-19 03:26:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:26:54,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:54,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:54,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:26:54,300 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:54,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:54,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-19 03:26:54,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:54,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356495716] [2020-08-19 03:26:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,615 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:26:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:26:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:26:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:54,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356495716] [2020-08-19 03:26:54,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:54,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:26:54,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890871362] [2020-08-19 03:26:54,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:26:54,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:26:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:26:54,734 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-19 03:26:55,181 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:26:55,481 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:55,746 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:55,990 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:56,529 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:26:57,346 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:57,734 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:26:58,052 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:26:58,380 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:26:58,636 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:26:59,098 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:26:59,458 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:26:59,723 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:01,433 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-19 03:27:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:27:01,433 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 03:27:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:01,444 INFO L225 Difference]: With dead ends: 1065 [2020-08-19 03:27:01,444 INFO L226 Difference]: Without dead ends: 825 [2020-08-19 03:27:01,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:27:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-19 03:27:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-19 03:27:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-19 03:27:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-19 03:27:01,652 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-19 03:27:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:01,653 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-19 03:27:01,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-19 03:27:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:27:01,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:01,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:01,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:27:01,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:01,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-19 03:27:01,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:01,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661488988] [2020-08-19 03:27:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:01,950 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:27:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:27:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:27:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:02,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661488988] [2020-08-19 03:27:02,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:02,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:27:02,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925868770] [2020-08-19 03:27:02,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:27:02,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:02,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:27:02,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:27:02,034 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-19 03:27:02,373 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:04,206 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-19 03:27:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:27:04,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 03:27:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:04,215 INFO L225 Difference]: With dead ends: 1759 [2020-08-19 03:27:04,215 INFO L226 Difference]: Without dead ends: 1051 [2020-08-19 03:27:04,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-19 03:27:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-19 03:27:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-19 03:27:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-19 03:27:04,468 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-19 03:27:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:04,468 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-19 03:27:04,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:27:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-19 03:27:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:27:04,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:04,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:04,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:27:04,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-19 03:27:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:04,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413111972] [2020-08-19 03:27:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,781 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:27:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:27:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:27:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:27:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:27:04,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413111972] [2020-08-19 03:27:04,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:04,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:27:04,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070755213] [2020-08-19 03:27:04,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:27:04,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:27:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:27:04,916 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-19 03:27:05,527 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 03:27:06,041 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:07,917 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:09,710 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-19 03:27:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:27:09,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 03:27:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:09,718 INFO L225 Difference]: With dead ends: 1865 [2020-08-19 03:27:09,719 INFO L226 Difference]: Without dead ends: 1168 [2020-08-19 03:27:09,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:27:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-19 03:27:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-19 03:27:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-19 03:27:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-19 03:27:09,957 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-19 03:27:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:09,959 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-19 03:27:09,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:27:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-19 03:27:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 03:27:09,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:09,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:09,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:27:09,966 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:09,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854615, now seen corresponding path program 1 times [2020-08-19 03:27:09,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:09,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255605243] [2020-08-19 03:27:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,273 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:27:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:27:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:27:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:27:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 03:27:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 03:27:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 03:27:10,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255605243] [2020-08-19 03:27:10,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:10,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:27:10,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111684863] [2020-08-19 03:27:10,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:27:10,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:27:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:27:10,489 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-19 03:27:11,480 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:11,735 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:27:12,001 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:12,270 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:13,195 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-19 03:27:13,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:27:13,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-19 03:27:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:13,206 INFO L225 Difference]: With dead ends: 2259 [2020-08-19 03:27:13,206 INFO L226 Difference]: Without dead ends: 1212 [2020-08-19 03:27:13,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:27:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-19 03:27:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-19 03:27:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-19 03:27:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-19 03:27:13,427 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 130 [2020-08-19 03:27:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:13,427 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-19 03:27:13,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:27:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-19 03:27:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-19 03:27:13,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:13,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:13,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:27:13,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:13,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1002064467, now seen corresponding path program 1 times [2020-08-19 03:27:13,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:13,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146445721] [2020-08-19 03:27:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,697 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:27:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:27:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 03:27:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 03:27:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:27:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 03:27:13,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146445721] [2020-08-19 03:27:13,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:13,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:27:13,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685725686] [2020-08-19 03:27:13,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:13,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:13,914 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-19 03:27:14,446 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:14,693 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:14,919 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:15,542 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:15,797 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:16,031 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:17,113 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-19 03:27:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:27:17,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-19 03:27:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:17,120 INFO L225 Difference]: With dead ends: 2069 [2020-08-19 03:27:17,120 INFO L226 Difference]: Without dead ends: 992 [2020-08-19 03:27:17,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:27:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-19 03:27:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-19 03:27:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-19 03:27:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-19 03:27:17,337 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 126 [2020-08-19 03:27:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:17,338 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-19 03:27:17,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-19 03:27:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 03:27:17,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:17,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:17,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:27:17,345 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:17,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-19 03:27:17,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:17,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3389417] [2020-08-19 03:27:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,632 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:27:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:27:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 03:27:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 03:27:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:27:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3389417] [2020-08-19 03:27:17,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:17,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:27:17,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969684579] [2020-08-19 03:27:17,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:27:17,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:27:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:27:17,836 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-19 03:27:18,308 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:18,990 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:20,998 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:21,275 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:21,526 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:21,769 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:22,032 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:22,279 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:22,509 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:22,757 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:23,012 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:23,246 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:23,959 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-19 03:27:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:27:23,960 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-19 03:27:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:23,971 INFO L225 Difference]: With dead ends: 2701 [2020-08-19 03:27:23,972 INFO L226 Difference]: Without dead ends: 1789 [2020-08-19 03:27:23,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 03:27:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-19 03:27:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-19 03:27:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-19 03:27:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-19 03:27:24,316 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-19 03:27:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:24,318 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-19 03:27:24,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:27:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-19 03:27:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 03:27:24,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:24,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:24,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:27:24,323 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-19 03:27:24,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:24,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828498050] [2020-08-19 03:27:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,608 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:27:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:27:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:27:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 03:27:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 03:27:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 03:27:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 03:27:24,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828498050] [2020-08-19 03:27:24,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:24,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:27:24,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725925010] [2020-08-19 03:27:24,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:27:24,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:24,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:27:24,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:24,822 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-19 03:27:25,509 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:27,739 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:27,982 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:28,281 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,535 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,799 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:29,420 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-19 03:27:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 03:27:29,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-19 03:27:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:29,434 INFO L225 Difference]: With dead ends: 1997 [2020-08-19 03:27:29,434 INFO L226 Difference]: Without dead ends: 1994 [2020-08-19 03:27:29,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-19 03:27:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-19 03:27:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-19 03:27:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-19 03:27:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-19 03:27:29,808 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-19 03:27:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:29,808 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-19 03:27:29,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:27:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-19 03:27:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 03:27:29,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:29,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:29,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:27:29,814 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:29,815 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-19 03:27:29,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:29,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118721767] [2020-08-19 03:27:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,161 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:27:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 03:27:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 03:27:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 03:27:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 03:27:30,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118721767] [2020-08-19 03:27:30,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:30,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:27:30,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19480372] [2020-08-19 03:27:30,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:30,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:30,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:30,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:30,322 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-19 03:27:30,755 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:31,594 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:31,885 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:32,151 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:32,409 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:32,658 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:33,026 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:33,759 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:34,051 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:34,314 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:36,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:36,543 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-19 03:27:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 03:27:36,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-19 03:27:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:36,560 INFO L225 Difference]: With dead ends: 4159 [2020-08-19 03:27:36,560 INFO L226 Difference]: Without dead ends: 2806 [2020-08-19 03:27:36,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 03:27:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-19 03:27:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-19 03:27:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-19 03:27:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-19 03:27:37,188 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-19 03:27:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:37,191 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-19 03:27:37,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-19 03:27:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 03:27:37,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:37,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:37,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:27:37,203 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:37,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1415393837, now seen corresponding path program 2 times [2020-08-19 03:27:37,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:37,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531502550] [2020-08-19 03:27:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,610 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 03:27:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 03:27:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 03:27:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 03:27:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 03:27:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 03:27:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-19 03:27:37,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531502550] [2020-08-19 03:27:37,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:37,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 03:27:37,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850796717] [2020-08-19 03:27:37,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 03:27:37,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 03:27:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:27:37,855 INFO L87 Difference]: Start difference. First operand 2479 states and 3004 transitions. Second operand 14 states. [2020-08-19 03:27:38,658 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:39,253 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:39,765 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:40,053 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:40,316 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:40,625 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:40,918 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:41,178 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190