/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:15:30,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:15:30,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:15:30,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:15:30,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:15:30,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:15:30,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:15:30,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:15:30,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:15:30,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:15:30,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:15:30,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:15:30,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:15:30,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:15:30,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:15:30,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:15:30,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:15:30,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:15:30,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:15:30,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:15:30,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:15:30,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:15:30,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:15:30,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:15:30,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:15:30,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:15:30,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:15:30,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:15:30,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:15:30,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:15:30,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:15:30,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:15:30,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:15:30,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:15:30,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:15:30,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:15:30,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:15:30,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:15:30,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:15:30,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:15:30,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:15:30,568 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 00:15:30,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:15:30,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:15:30,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:15:30,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:15:30,616 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:15:30,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:15:30,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:15:30,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:15:30,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:15:30,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:15:30,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:15:30,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:15:30,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:15:30,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:15:30,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:15:30,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:15:30,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:15:30,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:15:30,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:15:30,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:15:30,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:15:30,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:15:30,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:15:30,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:15:30,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:15:30,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:15:30,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:15:30,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:15:30,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:15:30,625 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:15:30,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:15:30,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:15:30,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:15:30,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:15:30,957 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:15:30,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-19 00:15:31,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840426f8a/de87476f615b46f3adb5273a81077eef/FLAG0807aa669 [2020-08-19 00:15:31,499 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:15:31,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2020-08-19 00:15:31,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840426f8a/de87476f615b46f3adb5273a81077eef/FLAG0807aa669 [2020-08-19 00:15:31,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/840426f8a/de87476f615b46f3adb5273a81077eef [2020-08-19 00:15:31,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:15:31,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:15:31,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:15:31,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:15:31,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:15:31,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:15:31" (1/1) ... [2020-08-19 00:15:31,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:31, skipping insertion in model container [2020-08-19 00:15:31,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:15:31" (1/1) ... [2020-08-19 00:15:31,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:15:31,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:15:32,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:15:32,379 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:15:32,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:15:32,521 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:15:32,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32 WrapperNode [2020-08-19 00:15:32,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:15:32,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:15:32,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:15:32,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:15:32,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (1/1) ... [2020-08-19 00:15:32,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:15:32,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:15:32,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:15:32,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:15:32,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (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 00:15:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:15:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:15:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:15:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:15:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:15:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:15:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:15:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:15:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:15:32,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:15:32,748 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:15:32,748 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:15:32,748 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:15:32,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:15:32,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:15:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:15:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:15:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:15:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:15:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:15:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:15:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:15:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:15:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:15:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:15:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:15:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:15:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:15:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:15:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:15:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:15:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:15:32,757 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:15:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:15:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:15:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:15:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:15:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:15:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:15:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:15:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:15:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:15:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:15:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:15:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:15:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:15:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:15:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:15:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:15:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:15:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:15:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:15:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:15:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:15:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:15:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:15:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:15:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:15:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:15:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:15:33,825 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:15:33,825 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:15:33,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:15:33 BoogieIcfgContainer [2020-08-19 00:15:33,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:15:33,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:15:33,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:15:33,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:15:33,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:15:31" (1/3) ... [2020-08-19 00:15:33,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666a83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:15:33, skipping insertion in model container [2020-08-19 00:15:33,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:15:32" (2/3) ... [2020-08-19 00:15:33,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666a83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:15:33, skipping insertion in model container [2020-08-19 00:15:33,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:15:33" (3/3) ... [2020-08-19 00:15:33,840 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2020-08-19 00:15:33,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:15:33,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:15:33,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:15:33,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:15:33,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:15:33,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:15:33,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:15:33,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:15:33,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:15:33,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:15:33,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:15:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-19 00:15:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 00:15:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:33,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:33,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2020-08-19 00:15:33,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:33,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347878081] [2020-08-19 00:15:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,750 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:15:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:15:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:34,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347878081] [2020-08-19 00:15:34,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:34,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:15:34,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389770067] [2020-08-19 00:15:34,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:15:34,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:15:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:15:34,950 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-19 00:15:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:36,193 INFO L93 Difference]: Finished difference Result 340 states and 436 transitions. [2020-08-19 00:15:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:15:36,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 00:15:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:36,216 INFO L225 Difference]: With dead ends: 340 [2020-08-19 00:15:36,216 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 00:15:36,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:15:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 00:15:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-19 00:15:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 00:15:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-19 00:15:36,316 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2020-08-19 00:15:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:36,317 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-19 00:15:36,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:15:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-19 00:15:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 00:15:36,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:36,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:36,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:15:36,322 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:36,347 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2020-08-19 00:15:36,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:36,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772608394] [2020-08-19 00:15:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,644 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:15:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:15:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:15:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:36,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772608394] [2020-08-19 00:15:36,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:36,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:15:36,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87008375] [2020-08-19 00:15:36,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:15:36,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:36,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:15:36,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:15:36,707 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 5 states. [2020-08-19 00:15:37,202 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:38,162 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2020-08-19 00:15:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:15:38,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 00:15:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:38,168 INFO L225 Difference]: With dead ends: 275 [2020-08-19 00:15:38,169 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 00:15:38,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:15:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 00:15:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 144. [2020-08-19 00:15:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 00:15:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-19 00:15:38,239 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2020-08-19 00:15:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:38,239 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-19 00:15:38,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:15:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-19 00:15:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 00:15:38,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:38,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:38,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:15:38,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:38,242 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2020-08-19 00:15:38,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:38,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054902059] [2020-08-19 00:15:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,590 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:15:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:15:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:38,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054902059] [2020-08-19 00:15:38,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:38,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:38,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695960102] [2020-08-19 00:15:38,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:38,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:38,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:38,734 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 9 states. [2020-08-19 00:15:39,156 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:39,484 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:39,740 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:40,000 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:40,850 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:42,798 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2020-08-19 00:15:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:15:42,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 00:15:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:42,810 INFO L225 Difference]: With dead ends: 485 [2020-08-19 00:15:42,810 INFO L226 Difference]: Without dead ends: 369 [2020-08-19 00:15:42,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-19 00:15:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 304. [2020-08-19 00:15:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 00:15:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2020-08-19 00:15:42,886 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2020-08-19 00:15:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:42,886 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2020-08-19 00:15:42,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2020-08-19 00:15:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:15:42,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:42,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:15:42,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2020-08-19 00:15:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:42,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319635266] [2020-08-19 00:15:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,204 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:15:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:15:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:15:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:15:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:15:43,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319635266] [2020-08-19 00:15:43,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:43,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:43,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566301327] [2020-08-19 00:15:43,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:43,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:43,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:43,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:43,334 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 9 states. [2020-08-19 00:15:43,715 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:44,417 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:45,358 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:45,600 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:45,923 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:46,213 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:47,054 INFO L93 Difference]: Finished difference Result 795 states and 1028 transitions. [2020-08-19 00:15:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:15:47,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 00:15:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:47,061 INFO L225 Difference]: With dead ends: 795 [2020-08-19 00:15:47,061 INFO L226 Difference]: Without dead ends: 519 [2020-08-19 00:15:47,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:15:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-19 00:15:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 451. [2020-08-19 00:15:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-19 00:15:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 537 transitions. [2020-08-19 00:15:47,151 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 537 transitions. Word has length 70 [2020-08-19 00:15:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:47,151 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 537 transitions. [2020-08-19 00:15:47,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 537 transitions. [2020-08-19 00:15:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:15:47,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:47,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:47,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:15:47,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:47,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2020-08-19 00:15:47,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:47,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372939335] [2020-08-19 00:15:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,406 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:15:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:15:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:47,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372939335] [2020-08-19 00:15:47,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:47,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:47,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672195939] [2020-08-19 00:15:47,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:47,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:47,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:47,605 INFO L87 Difference]: Start difference. First operand 451 states and 537 transitions. Second operand 9 states. [2020-08-19 00:15:48,030 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:49,106 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:49,369 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:49,637 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:49,913 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:51,205 INFO L93 Difference]: Finished difference Result 1362 states and 1793 transitions. [2020-08-19 00:15:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:15:51,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 00:15:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:51,213 INFO L225 Difference]: With dead ends: 1362 [2020-08-19 00:15:51,214 INFO L226 Difference]: Without dead ends: 939 [2020-08-19 00:15:51,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-19 00:15:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 811. [2020-08-19 00:15:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-19 00:15:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 969 transitions. [2020-08-19 00:15:51,367 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 969 transitions. Word has length 108 [2020-08-19 00:15:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:51,367 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 969 transitions. [2020-08-19 00:15:51,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 969 transitions. [2020-08-19 00:15:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:15:51,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:51,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:51,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:15:51,372 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:51,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:51,372 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2020-08-19 00:15:51,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:51,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320317555] [2020-08-19 00:15:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,656 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:15:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:15:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:51,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320317555] [2020-08-19 00:15:51,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:51,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:51,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280842961] [2020-08-19 00:15:51,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:51,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:51,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:51,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:51,784 INFO L87 Difference]: Start difference. First operand 811 states and 969 transitions. Second operand 9 states. [2020-08-19 00:15:52,948 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:53,241 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:53,535 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:53,892 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:54,928 INFO L93 Difference]: Finished difference Result 1729 states and 2208 transitions. [2020-08-19 00:15:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:15:54,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 00:15:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:54,937 INFO L225 Difference]: With dead ends: 1729 [2020-08-19 00:15:54,937 INFO L226 Difference]: Without dead ends: 946 [2020-08-19 00:15:54,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:15:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-08-19 00:15:55,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 831. [2020-08-19 00:15:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-19 00:15:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 989 transitions. [2020-08-19 00:15:55,107 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 989 transitions. Word has length 108 [2020-08-19 00:15:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:55,109 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 989 transitions. [2020-08-19 00:15:55,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 989 transitions. [2020-08-19 00:15:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:15:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:55,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:55,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:15:55,116 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:55,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2020-08-19 00:15:55,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:55,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052906815] [2020-08-19 00:15:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,401 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:55,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:15:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:15:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:55,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052906815] [2020-08-19 00:15:55,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:55,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:15:55,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608332120] [2020-08-19 00:15:55,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:15:55,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:55,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:15:55,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:15:55,570 INFO L87 Difference]: Start difference. First operand 831 states and 989 transitions. Second operand 11 states. [2020-08-19 00:15:56,084 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:56,336 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:56,573 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:57,401 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:57,676 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:57,954 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:58,997 INFO L93 Difference]: Finished difference Result 1544 states and 1934 transitions. [2020-08-19 00:15:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:15:58,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 00:15:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:59,004 INFO L225 Difference]: With dead ends: 1544 [2020-08-19 00:15:59,004 INFO L226 Difference]: Without dead ends: 741 [2020-08-19 00:15:59,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-08-19 00:15:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-08-19 00:15:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-08-19 00:15:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 775 transitions. [2020-08-19 00:15:59,132 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 775 transitions. Word has length 108 [2020-08-19 00:15:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:59,133 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 775 transitions. [2020-08-19 00:15:59,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:15:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 775 transitions. [2020-08-19 00:15:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 00:15:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:59,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:59,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:15:59,137 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2020-08-19 00:15:59,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:59,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823690696] [2020-08-19 00:15:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,510 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:15:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 00:15:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 00:15:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 00:15:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:59,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823690696] [2020-08-19 00:15:59,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:59,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:15:59,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626380489] [2020-08-19 00:15:59,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:15:59,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:59,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:15:59,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:15:59,748 INFO L87 Difference]: Start difference. First operand 664 states and 775 transitions. Second operand 12 states. [2020-08-19 00:16:00,430 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:01,345 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:02,050 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:02,378 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:02,642 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:02,957 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:03,206 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:05,290 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:05,582 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:06,268 INFO L93 Difference]: Finished difference Result 1955 states and 2469 transitions. [2020-08-19 00:16:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:16:06,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 00:16:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:06,282 INFO L225 Difference]: With dead ends: 1955 [2020-08-19 00:16:06,283 INFO L226 Difference]: Without dead ends: 1505 [2020-08-19 00:16:06,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 00:16:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-08-19 00:16:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1367. [2020-08-19 00:16:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2020-08-19 00:16:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1597 transitions. [2020-08-19 00:16:06,586 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1597 transitions. Word has length 112 [2020-08-19 00:16:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:06,589 INFO L479 AbstractCegarLoop]: Abstraction has 1367 states and 1597 transitions. [2020-08-19 00:16:06,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:16:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1597 transitions. [2020-08-19 00:16:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-19 00:16:06,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:06,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:16:06,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:16:06,596 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2020-08-19 00:16:06,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:06,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438414667] [2020-08-19 00:16:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,897 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:06,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 00:16:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 00:16:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 00:16:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:16:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 00:16:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 00:16:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 00:16:07,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438414667] [2020-08-19 00:16:07,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:07,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:16:07,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71102022] [2020-08-19 00:16:07,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:16:07,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:07,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:16:07,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:16:07,289 INFO L87 Difference]: Start difference. First operand 1367 states and 1597 transitions. Second operand 16 states. [2020-08-19 00:16:07,854 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:08,189 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:08,447 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:08,717 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:16:09,419 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:09,708 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:10,067 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:10,346 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:11,666 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:12,250 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:12,561 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:12,882 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:13,409 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:13,800 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:14,168 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:14,943 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:15,259 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:16:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:16,084 INFO L93 Difference]: Finished difference Result 3011 states and 3644 transitions. [2020-08-19 00:16:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 00:16:16,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-19 00:16:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:16,100 INFO L225 Difference]: With dead ends: 3011 [2020-08-19 00:16:16,100 INFO L226 Difference]: Without dead ends: 1852 [2020-08-19 00:16:16,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 00:16:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-08-19 00:16:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1641. [2020-08-19 00:16:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-08-19 00:16:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1901 transitions. [2020-08-19 00:16:16,406 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1901 transitions. Word has length 172 [2020-08-19 00:16:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:16,407 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1901 transitions. [2020-08-19 00:16:16,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:16:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1901 transitions. [2020-08-19 00:16:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-19 00:16:16,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:16,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-19 00:16:16,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:16:16,424 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash -766671753, now seen corresponding path program 1 times [2020-08-19 00:16:16,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:16,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544968322] [2020-08-19 00:16:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,790 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:16:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:16:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-19 00:16:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:16:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:16:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-19 00:16:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-19 00:16:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-19 00:16:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 00:16:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-08-19 00:16:17,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544968322] [2020-08-19 00:16:17,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:17,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:16:17,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690697907] [2020-08-19 00:16:17,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:16:17,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:16:17,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:16:17,282 INFO L87 Difference]: Start difference. First operand 1641 states and 1901 transitions. Second operand 15 states. [2020-08-19 00:16:18,723 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:18,995 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:19,239 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:16:19,490 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:19,760 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:20,734 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:21,250 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:16:21,703 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 00:16:22,171 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:16:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:16:24,997 INFO L93 Difference]: Finished difference Result 4671 states and 5625 transitions. [2020-08-19 00:16:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:16:24,998 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-19 00:16:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:16:25,013 INFO L225 Difference]: With dead ends: 4671 [2020-08-19 00:16:25,013 INFO L226 Difference]: Without dead ends: 2827 [2020-08-19 00:16:25,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 00:16:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-08-19 00:16:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2419. [2020-08-19 00:16:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2419 states. [2020-08-19 00:16:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 2813 transitions. [2020-08-19 00:16:25,572 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 2813 transitions. Word has length 303 [2020-08-19 00:16:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:16:25,573 INFO L479 AbstractCegarLoop]: Abstraction has 2419 states and 2813 transitions. [2020-08-19 00:16:25,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:16:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 2813 transitions. [2020-08-19 00:16:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-19 00:16:25,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:16:25,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-19 00:16:25,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:16:25,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:16:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:16:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1846391666, now seen corresponding path program 1 times [2020-08-19 00:16:25,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:16:25,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337086492] [2020-08-19 00:16:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:16:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,881 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:16:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:16:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:16:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:16:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:16:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:25,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:16:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:16:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:16:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:16:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:16:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:16:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-19 00:16:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:16:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:16:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:16:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:16:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 00:16:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:16:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-19 00:16:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:16:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:16:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:16:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:16:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 00:16:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-19 00:16:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:16:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 90 proven. 38 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-08-19 00:16:26,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337086492] [2020-08-19 00:16:26,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:16:26,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:16:26,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968467474] [2020-08-19 00:16:26,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:16:26,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:16:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:16:26,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:16:26,309 INFO L87 Difference]: Start difference. First operand 2419 states and 2813 transitions. Second operand 16 states. [2020-08-19 00:16:27,011 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:16:27,318 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:27,564 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:27,799 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:16:28,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191