/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:54:49,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:54:49,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:54:49,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:54:49,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:54:49,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:54:49,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:54:49,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:54:49,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:54:49,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:54:49,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:54:49,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:54:49,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:54:49,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:54:49,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:54:49,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:54:49,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:54:49,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:54:49,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:54:49,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:54:49,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:54:49,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:54:49,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:54:49,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:54:49,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:54:49,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:54:49,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:54:49,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:54:49,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:54:49,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:54:49,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:54:49,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:54:49,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:54:49,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:54:49,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:54:49,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:54:49,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:54:49,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:54:49,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:54:49,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:54:49,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:54:49,574 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 [2020-08-21 17:54:49,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:54:49,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:54:49,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:54:49,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:54:49,599 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:54:49,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:54:49,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:54:49,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:54:49,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:54:49,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:54:49,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:54:49,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:54:49,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:54:49,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:54:49,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:54:49,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:54:49,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:54:49,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:54:49,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:54:49,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:54:49,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:54:49,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:54:49,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:54:49,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:54:49,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:54:49,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:54:49,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:54:49,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:54:49,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:54:49,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:54:49,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:54:49,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:54:49,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:54:49,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:54:49,927 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:54:49,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-21 17:54:50,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4778411b1/3aae105055f34f37ba2c3fec03fc97e5/FLAG8884eb93c [2020-08-21 17:54:50,570 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:54:50,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-08-21 17:54:50,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4778411b1/3aae105055f34f37ba2c3fec03fc97e5/FLAG8884eb93c [2020-08-21 17:54:50,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4778411b1/3aae105055f34f37ba2c3fec03fc97e5 [2020-08-21 17:54:50,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:54:50,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:54:50,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:50,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:54:50,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:54:50,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:50" (1/1) ... [2020-08-21 17:54:50,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:50, skipping insertion in model container [2020-08-21 17:54:50,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:50" (1/1) ... [2020-08-21 17:54:50,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:54:50,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:54:51,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:51,417 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:54:51,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:51,536 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:54:51,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51 WrapperNode [2020-08-21 17:54:51,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:51,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:54:51,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:54:51,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:54:51,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (1/1) ... [2020-08-21 17:54:51,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:54:51,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:54:51,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:54:51,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:54:51,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (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 [2020-08-21 17:54:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:54:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:54:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:54:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:54:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:54:51,692 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:54:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:51,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:51,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:54:51,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:54:51,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:54:51,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:54:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:54:51,697 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:54:51,698 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:54:51,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:54:51,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:54:51,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:54:51,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:54:51,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:54:52,819 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:54:52,820 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:54:52,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:52 BoogieIcfgContainer [2020-08-21 17:54:52,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:54:52,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:54:52,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:54:52,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:54:52,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:54:50" (1/3) ... [2020-08-21 17:54:52,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3bc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:52, skipping insertion in model container [2020-08-21 17:54:52,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:51" (2/3) ... [2020-08-21 17:54:52,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb3bc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:52, skipping insertion in model container [2020-08-21 17:54:52,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:52" (3/3) ... [2020-08-21 17:54:52,840 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2020-08-21 17:54:52,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:54:52,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:54:52,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:54:52,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:54:52,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:54:52,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:54:52,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:54:52,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:54:52,894 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:54:52,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:54:52,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:54:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-21 17:54:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:54:52,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:52,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:52,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:52,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1417441614, now seen corresponding path program 1 times [2020-08-21 17:54:52,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:52,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740430011] [2020-08-21 17:54:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,622 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:54:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:53,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740430011] [2020-08-21 17:54:53,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:53,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:54:53,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100748544] [2020-08-21 17:54:53,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:54:53,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:54:53,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:53,741 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-21 17:54:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:54,975 INFO L93 Difference]: Finished difference Result 312 states and 408 transitions. [2020-08-21 17:54:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:54:54,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:54:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:54,995 INFO L225 Difference]: With dead ends: 312 [2020-08-21 17:54:54,995 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 17:54:55,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 17:54:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-08-21 17:54:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 17:54:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-21 17:54:55,118 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-21 17:54:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:55,118 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-21 17:54:55,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:54:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-21 17:54:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:54:55,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:55,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:55,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:54:55,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1689810546, now seen corresponding path program 1 times [2020-08-21 17:54:55,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:55,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154978582] [2020-08-21 17:54:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,507 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:55,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154978582] [2020-08-21 17:54:55,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:55,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:54:55,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765547036] [2020-08-21 17:54:55,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:54:55,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:54:55,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:54:55,555 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-21 17:54:55,999 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:56,986 INFO L93 Difference]: Finished difference Result 241 states and 295 transitions. [2020-08-21 17:54:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:54:56,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:54:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:56,995 INFO L225 Difference]: With dead ends: 241 [2020-08-21 17:54:56,995 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 17:54:56,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:54:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 17:54:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-21 17:54:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 17:54:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-21 17:54:57,054 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-21 17:54:57,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:57,055 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-21 17:54:57,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:54:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-21 17:54:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:54:57,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:57,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:57,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:54:57,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:57,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1011180464, now seen corresponding path program 1 times [2020-08-21 17:54:57,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:57,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266256984] [2020-08-21 17:54:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,417 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:54:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:57,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266256984] [2020-08-21 17:54:57,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:57,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:57,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902731071] [2020-08-21 17:54:57,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:57,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:57,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:57,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:57,544 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-21 17:54:57,957 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:58,251 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:58,502 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:58,760 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:59,979 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2020-08-21 17:54:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:54:59,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 17:54:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:59,983 INFO L225 Difference]: With dead ends: 254 [2020-08-21 17:54:59,984 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 17:54:59,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:54:59,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 17:55:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-08-21 17:55:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 17:55:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2020-08-21 17:55:00,051 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 52 [2020-08-21 17:55:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:00,052 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2020-08-21 17:55:00,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:55:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2020-08-21 17:55:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:55:00,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:00,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:55:00,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:55:00,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:00,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1017334303, now seen corresponding path program 1 times [2020-08-21 17:55:00,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:00,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487248259] [2020-08-21 17:55:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,298 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:55:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:55:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:55:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:55:00,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487248259] [2020-08-21 17:55:00,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:00,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:55:00,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713723913] [2020-08-21 17:55:00,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:55:00,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:55:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:55:00,429 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand 6 states. [2020-08-21 17:55:00,803 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:02,038 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:02,833 INFO L93 Difference]: Finished difference Result 356 states and 440 transitions. [2020-08-21 17:55:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:55:02,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 17:55:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:02,842 INFO L225 Difference]: With dead ends: 356 [2020-08-21 17:55:02,842 INFO L226 Difference]: Without dead ends: 255 [2020-08-21 17:55:02,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:55:02,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-21 17:55:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-21 17:55:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-21 17:55:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2020-08-21 17:55:02,925 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 65 [2020-08-21 17:55:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:02,926 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2020-08-21 17:55:02,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:55:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2020-08-21 17:55:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:55:02,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:02,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:55:02,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:55:02,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:02,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154125, now seen corresponding path program 1 times [2020-08-21 17:55:02,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:02,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360930547] [2020-08-21 17:55:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,257 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:55:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:55:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:55:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:55:03,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360930547] [2020-08-21 17:55:03,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:03,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:55:03,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917475791] [2020-08-21 17:55:03,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:55:03,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:03,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:55:03,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:55:03,359 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand 8 states. [2020-08-21 17:55:03,750 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:04,807 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:05,139 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:05,666 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:05,908 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:06,201 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:07,150 INFO L93 Difference]: Finished difference Result 634 states and 779 transitions. [2020-08-21 17:55:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:55:07,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-21 17:55:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:07,156 INFO L225 Difference]: With dead ends: 634 [2020-08-21 17:55:07,156 INFO L226 Difference]: Without dead ends: 446 [2020-08-21 17:55:07,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:55:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-08-21 17:55:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2020-08-21 17:55:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 17:55:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 432 transitions. [2020-08-21 17:55:07,244 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 432 transitions. Word has length 79 [2020-08-21 17:55:07,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:07,244 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 432 transitions. [2020-08-21 17:55:07,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:55:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 432 transitions. [2020-08-21 17:55:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 17:55:07,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:07,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:55:07,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:55:07,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:07,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1996569391, now seen corresponding path program 1 times [2020-08-21 17:55:07,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:07,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10797405] [2020-08-21 17:55:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,538 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:55:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:55:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:55:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 17:55:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:55:07,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10797405] [2020-08-21 17:55:07,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:07,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:55:07,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125633583] [2020-08-21 17:55:07,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:55:07,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:07,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:55:07,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:55:07,699 INFO L87 Difference]: Start difference. First operand 379 states and 432 transitions. Second operand 9 states. [2020-08-21 17:55:08,167 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:09,291 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:09,556 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:10,520 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:10,771 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:10,992 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:11,304 INFO L93 Difference]: Finished difference Result 488 states and 612 transitions. [2020-08-21 17:55:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:55:11,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 17:55:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:11,309 INFO L225 Difference]: With dead ends: 488 [2020-08-21 17:55:11,310 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 17:55:11,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:55:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 17:55:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-08-21 17:55:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 17:55:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 431 transitions. [2020-08-21 17:55:11,423 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 431 transitions. Word has length 83 [2020-08-21 17:55:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:11,424 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 431 transitions. [2020-08-21 17:55:11,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:55:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 431 transitions. [2020-08-21 17:55:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 17:55:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:11,427 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] [2020-08-21 17:55:11,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:55:11,428 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1098775200, now seen corresponding path program 1 times [2020-08-21 17:55:11,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:11,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851287227] [2020-08-21 17:55:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,686 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:55:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:55:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:55:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:55:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:55:11,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851287227] [2020-08-21 17:55:11,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:11,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:55:11,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867595993] [2020-08-21 17:55:11,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:55:11,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:11,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:55:11,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:55:11,835 INFO L87 Difference]: Start difference. First operand 379 states and 431 transitions. Second operand 9 states. [2020-08-21 17:55:12,754 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:12,999 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:55:13,270 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:13,518 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:14,565 INFO L93 Difference]: Finished difference Result 848 states and 1052 transitions. [2020-08-21 17:55:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:55:14,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-08-21 17:55:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:14,570 INFO L225 Difference]: With dead ends: 848 [2020-08-21 17:55:14,570 INFO L226 Difference]: Without dead ends: 493 [2020-08-21 17:55:14,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:55:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-21 17:55:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 389. [2020-08-21 17:55:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-08-21 17:55:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 441 transitions. [2020-08-21 17:55:14,644 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 441 transitions. Word has length 99 [2020-08-21 17:55:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:14,645 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 441 transitions. [2020-08-21 17:55:14,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:55:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 441 transitions. [2020-08-21 17:55:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 17:55:14,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:14,647 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] [2020-08-21 17:55:14,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:55:14,647 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash -205288862, now seen corresponding path program 1 times [2020-08-21 17:55:14,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:14,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137529658] [2020-08-21 17:55:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,899 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:55:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:55:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:55:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:55:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:55:15,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137529658] [2020-08-21 17:55:15,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:15,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:55:15,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953674062] [2020-08-21 17:55:15,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:55:15,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:55:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:55:15,082 INFO L87 Difference]: Start difference. First operand 389 states and 441 transitions. Second operand 11 states. [2020-08-21 17:55:15,820 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:16,155 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:16,471 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:17,087 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:17,325 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:17,563 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:55:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:18,737 INFO L93 Difference]: Finished difference Result 868 states and 1074 transitions. [2020-08-21 17:55:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:55:18,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-08-21 17:55:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:18,748 INFO L225 Difference]: With dead ends: 868 [2020-08-21 17:55:18,748 INFO L226 Difference]: Without dead ends: 503 [2020-08-21 17:55:18,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:55:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-08-21 17:55:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 397. [2020-08-21 17:55:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-21 17:55:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 449 transitions. [2020-08-21 17:55:18,859 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 449 transitions. Word has length 99 [2020-08-21 17:55:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:18,860 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 449 transitions. [2020-08-21 17:55:18,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:55:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 449 transitions. [2020-08-21 17:55:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 17:55:18,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:18,865 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] [2020-08-21 17:55:18,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:55:18,865 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:18,866 INFO L82 PathProgramCache]: Analyzing trace with hash -213048221, now seen corresponding path program 1 times [2020-08-21 17:55:18,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:18,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480533813] [2020-08-21 17:55:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,120 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:55:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:55:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:55:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 17:55:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:55:19,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480533813] [2020-08-21 17:55:19,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:55:19,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:55:19,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137677633] [2020-08-21 17:55:19,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:55:19,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:19,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:55:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:55:19,276 INFO L87 Difference]: Start difference. First operand 397 states and 449 transitions. Second operand 7 states. [2020-08-21 17:55:19,705 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:20,389 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:22,767 INFO L93 Difference]: Finished difference Result 1210 states and 1548 transitions. [2020-08-21 17:55:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:55:22,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-08-21 17:55:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:22,773 INFO L225 Difference]: With dead ends: 1210 [2020-08-21 17:55:22,773 INFO L226 Difference]: Without dead ends: 837 [2020-08-21 17:55:22,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:55:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-21 17:55:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 717. [2020-08-21 17:55:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-21 17:55:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 843 transitions. [2020-08-21 17:55:22,926 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 843 transitions. Word has length 99 [2020-08-21 17:55:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:22,927 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 843 transitions. [2020-08-21 17:55:22,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:55:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 843 transitions. [2020-08-21 17:55:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 17:55:22,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:22,930 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] [2020-08-21 17:55:22,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:55:22,930 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1140072279, now seen corresponding path program 1 times [2020-08-21 17:55:22,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:22,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978546014] [2020-08-21 17:55:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,194 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:55:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:55:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:55:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:55:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 17:55:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:55:23,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978546014] [2020-08-21 17:55:23,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:55:23,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 17:55:23,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743218514] [2020-08-21 17:55:23,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 17:55:23,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:23,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 17:55:23,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:55:23,515 INFO L87 Difference]: Start difference. First operand 717 states and 843 transitions. Second operand 17 states. [2020-08-21 17:55:24,120 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:24,428 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:24,680 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:24,927 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:25,587 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:26,576 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:26,867 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:27,118 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:27,373 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:27,682 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:27,929 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:28,468 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 17:55:29,014 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 17:55:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:31,026 INFO L93 Difference]: Finished difference Result 1499 states and 1843 transitions. [2020-08-21 17:55:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 17:55:31,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-08-21 17:55:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:31,033 INFO L225 Difference]: With dead ends: 1499 [2020-08-21 17:55:31,033 INFO L226 Difference]: Without dead ends: 806 [2020-08-21 17:55:31,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 17:55:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-08-21 17:55:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 689. [2020-08-21 17:55:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-21 17:55:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 797 transitions. [2020-08-21 17:55:31,167 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 797 transitions. Word has length 103 [2020-08-21 17:55:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:31,168 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 797 transitions. [2020-08-21 17:55:31,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 17:55:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 797 transitions. [2020-08-21 17:55:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 17:55:31,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:31,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:55:31,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:55:31,172 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:31,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1934361844, now seen corresponding path program 1 times [2020-08-21 17:55:31,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:31,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499999148] [2020-08-21 17:55:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,510 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:55:31,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:55:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:55:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:55:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:55:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:55:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:55:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:55:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:55:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:55:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 17:55:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 17:55:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 17:55:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:55:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 17:55:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:55:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 17:55:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 17:55:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:55:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 17:55:31,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499999148] [2020-08-21 17:55:31,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:55:31,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 17:55:31,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054959067] [2020-08-21 17:55:31,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 17:55:31,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:55:31,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 17:55:31,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:55:31,941 INFO L87 Difference]: Start difference. First operand 689 states and 797 transitions. Second operand 18 states. [2020-08-21 17:55:32,968 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:33,421 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:33,695 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:33,965 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:34,639 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:35,701 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:36,032 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:36,328 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:36,605 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:36,927 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:37,208 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:38,309 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:38,572 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:38,871 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:39,140 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:55:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:39,978 INFO L93 Difference]: Finished difference Result 1274 states and 1566 transitions. [2020-08-21 17:55:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-21 17:55:39,978 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 155 [2020-08-21 17:55:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:39,979 INFO L225 Difference]: With dead ends: 1274 [2020-08-21 17:55:39,979 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:55:39,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2020-08-21 17:55:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:55:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:55:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:55:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:55:39,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-08-21 17:55:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:39,985 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:55:39,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 17:55:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:55:39,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:55:39,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:55:39,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:55:40,930 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 17:55:41,040 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-21 17:55:41,409 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 17:55:42,612 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-21 17:55:43,883 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-21 17:55:45,523 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 263 [2020-08-21 17:55:46,392 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-21 17:55:46,893 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 262 [2020-08-21 17:55:47,082 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-21 17:55:47,576 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-21 17:55:48,111 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 24 [2020-08-21 17:55:48,282 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 17:55:48,451 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 17:55:48,618 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1