/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:13:19,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:13:19,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:13:19,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:13:19,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:13:19,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:13:19,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:13:19,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:13:19,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:13:19,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:13:19,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:13:19,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:13:19,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:13:19,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:13:19,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:13:19,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:13:19,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:13:19,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:13:19,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:13:19,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:13:19,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:13:19,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:13:19,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:13:19,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:13:19,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:13:19,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:13:19,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:13:19,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:13:19,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:13:19,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:13:19,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:13:19,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:13:19,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:13:19,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:13:19,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:13:19,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:13:19,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:13:19,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:13:19,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:13:19,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:13:19,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:13:19,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:13:19,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:13:19,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:13:19,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:13:19,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:13:19,592 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:13:19,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:13:19,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:13:19,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:13:19,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:13:19,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:13:19,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:13:19,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:13:19,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:13:19,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:13:19,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:13:19,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:13:19,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:19,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:13:19,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:13:19,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:13:19,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:13:19,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:13:19,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:13:19,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:13:19,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:13:19,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:13:19,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:13:19,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:13:19,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:13:19,929 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:13:19,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 04:13:20,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd4ede05f/66b81ec6060440849805ec68776842bb/FLAG57049e998 [2020-08-19 04:13:20,579 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:13:20,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 04:13:20,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd4ede05f/66b81ec6060440849805ec68776842bb/FLAG57049e998 [2020-08-19 04:13:20,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd4ede05f/66b81ec6060440849805ec68776842bb [2020-08-19 04:13:20,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:13:20,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:13:20,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:20,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:13:20,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:13:20,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:20" (1/1) ... [2020-08-19 04:13:20,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f1cfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:20, skipping insertion in model container [2020-08-19 04:13:20,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:20" (1/1) ... [2020-08-19 04:13:20,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:13:20,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:13:21,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:21,337 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:13:21,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:21,499 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:13:21,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21 WrapperNode [2020-08-19 04:13:21,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:21,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:13:21,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:13:21,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:13:21,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... [2020-08-19 04:13:21,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:13:21,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:13:21,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:13:21,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:13:21,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:21,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:13:21,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:13:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:13:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:13:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:13:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:13:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:13:21,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:13:21,682 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:13:21,682 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:13:21,682 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:13:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:13:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:13:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:13:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:13:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:13:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:13:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:13:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:13:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:13:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:13:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:13:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:13:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:13:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:13:21,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:13:21,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:13:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:13:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:13:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:13:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:13:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:13:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:13:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:13:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:13:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:13:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:13:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:13:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:13:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:13:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:13:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:13:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:13:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:13:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:13:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:13:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:13:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:13:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:13:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:13:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:13:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:13:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:13:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:13:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:13:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:13:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:13:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:13:22,859 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:13:22,859 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:13:22,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:22 BoogieIcfgContainer [2020-08-19 04:13:22,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:13:22,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:13:22,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:13:22,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:13:22,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:13:20" (1/3) ... [2020-08-19 04:13:22,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beff252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:22, skipping insertion in model container [2020-08-19 04:13:22,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:21" (2/3) ... [2020-08-19 04:13:22,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beff252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:22, skipping insertion in model container [2020-08-19 04:13:22,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:22" (3/3) ... [2020-08-19 04:13:22,874 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-19 04:13:22,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:13:22,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:13:22,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:13:22,936 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:13:22,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:13:22,937 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:13:22,937 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:13:22,937 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:13:22,938 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:13:22,938 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:13:22,938 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:13:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 04:13:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:13:22,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:22,979 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] [2020-08-19 04:13:22,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:22,985 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-19 04:13:22,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:22,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859244914] [2020-08-19 04:13:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,640 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:13:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:13:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:23,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859244914] [2020-08-19 04:13:23,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:23,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:13:23,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038131966] [2020-08-19 04:13:23,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:13:23,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:23,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:13:23,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:13:23,800 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 04:13:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:24,988 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-19 04:13:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:13:24,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 04:13:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:25,007 INFO L225 Difference]: With dead ends: 287 [2020-08-19 04:13:25,008 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 04:13:25,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:13:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 04:13:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 04:13:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 04:13:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-19 04:13:25,159 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-19 04:13:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:25,159 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-19 04:13:25,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:13:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-19 04:13:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:13:25,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:25,166 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] [2020-08-19 04:13:25,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:13:25,167 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-19 04:13:25,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:25,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360146446] [2020-08-19 04:13:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,487 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:25,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360146446] [2020-08-19 04:13:25,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:25,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:13:25,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847481303] [2020-08-19 04:13:25,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:13:25,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:13:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:13:25,539 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-19 04:13:25,997 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:26,774 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-19 04:13:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:13:26,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 04:13:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:26,779 INFO L225 Difference]: With dead ends: 220 [2020-08-19 04:13:26,779 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 04:13:26,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:13:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 04:13:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 04:13:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 04:13:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-19 04:13:26,835 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-19 04:13:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:26,836 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-19 04:13:26,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:13:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-19 04:13:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:13:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:26,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:26,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:13:26,841 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:26,841 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-19 04:13:26,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:26,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054783111] [2020-08-19 04:13:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,185 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:13:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:13:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:27,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054783111] [2020-08-19 04:13:27,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:27,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:27,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500808299] [2020-08-19 04:13:27,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:27,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:27,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:27,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:27,324 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-19 04:13:27,702 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:28,078 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:28,315 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:28,553 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:29,670 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-19 04:13:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:13:29,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 04:13:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:29,674 INFO L225 Difference]: With dead ends: 229 [2020-08-19 04:13:29,674 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 04:13:29,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:13:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 04:13:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 04:13:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 04:13:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 04:13:29,706 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-19 04:13:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:29,706 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 04:13:29,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 04:13:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 04:13:29,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:29,708 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] [2020-08-19 04:13:29,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:13:29,709 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-19 04:13:29,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:29,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458237653] [2020-08-19 04:13:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:29,993 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:13:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:13:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 04:13:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:30,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458237653] [2020-08-19 04:13:30,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:30,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:13:30,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193774668] [2020-08-19 04:13:30,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:13:30,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:13:30,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:13:30,126 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-19 04:13:30,448 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:31,555 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:32,151 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-19 04:13:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:13:32,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 04:13:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:32,159 INFO L225 Difference]: With dead ends: 324 [2020-08-19 04:13:32,160 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 04:13:32,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:13:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 04:13:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-19 04:13:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-19 04:13:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-19 04:13:32,231 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-19 04:13:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:32,232 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-19 04:13:32,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:13:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-19 04:13:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 04:13:32,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:32,234 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] [2020-08-19 04:13:32,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:13:32,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-19 04:13:32,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:32,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556675938] [2020-08-19 04:13:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,502 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:13:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 04:13:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 04:13:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 04:13:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:32,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556675938] [2020-08-19 04:13:32,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:32,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:32,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667756607] [2020-08-19 04:13:32,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:32,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:32,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:32,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:32,608 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-19 04:13:33,063 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:34,405 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:34,674 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:34,952 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:35,166 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:35,768 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-19 04:13:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:13:35,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-19 04:13:35,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:35,774 INFO L225 Difference]: With dead ends: 528 [2020-08-19 04:13:35,775 INFO L226 Difference]: Without dead ends: 359 [2020-08-19 04:13:35,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:13:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-19 04:13:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-19 04:13:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-19 04:13:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-19 04:13:35,870 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-19 04:13:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:35,870 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-19 04:13:35,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-19 04:13:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:13:35,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:35,872 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] [2020-08-19 04:13:35,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:13:35,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:35,873 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-19 04:13:35,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:35,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790692528] [2020-08-19 04:13:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,152 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:13:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 04:13:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:13:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:13:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:36,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790692528] [2020-08-19 04:13:36,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:36,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:13:36,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391246578] [2020-08-19 04:13:36,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:13:36,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:36,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:13:36,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:13:36,271 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-19 04:13:36,660 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:37,176 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:38,671 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:40,133 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-19 04:13:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:13:40,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 04:13:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:40,139 INFO L225 Difference]: With dead ends: 770 [2020-08-19 04:13:40,140 INFO L226 Difference]: Without dead ends: 590 [2020-08-19 04:13:40,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 04:13:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-19 04:13:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-19 04:13:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 04:13:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-19 04:13:40,233 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-19 04:13:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:40,234 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-19 04:13:40,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:13:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-19 04:13:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:13:40,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:40,236 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] [2020-08-19 04:13:40,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:13:40,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-19 04:13:40,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:40,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102325130] [2020-08-19 04:13:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,485 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:13:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 04:13:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:13:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:13:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:40,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102325130] [2020-08-19 04:13:40,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:40,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:40,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963405267] [2020-08-19 04:13:40,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:40,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:40,610 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-19 04:13:41,447 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:41,695 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:41,940 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:42,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:42,857 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-19 04:13:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:13:42,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 04:13:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:42,862 INFO L225 Difference]: With dead ends: 947 [2020-08-19 04:13:42,862 INFO L226 Difference]: Without dead ends: 566 [2020-08-19 04:13:42,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:13:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-19 04:13:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-19 04:13:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 04:13:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-19 04:13:43,005 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-19 04:13:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:43,006 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-19 04:13:43,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-19 04:13:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:13:43,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:43,011 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] [2020-08-19 04:13:43,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:13:43,012 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:43,012 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-19 04:13:43,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:43,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679369014] [2020-08-19 04:13:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,332 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:13:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 04:13:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:13:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:13:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:43,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679369014] [2020-08-19 04:13:43,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:43,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:13:43,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839718663] [2020-08-19 04:13:43,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:13:43,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:43,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:13:43,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:13:43,499 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-19 04:13:44,162 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:44,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:44,645 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:45,273 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:45,545 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:45,820 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:46,059 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:47,151 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-19 04:13:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:13:47,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-19 04:13:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:47,157 INFO L225 Difference]: With dead ends: 1071 [2020-08-19 04:13:47,157 INFO L226 Difference]: Without dead ends: 571 [2020-08-19 04:13:47,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 04:13:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-19 04:13:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-19 04:13:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-19 04:13:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-19 04:13:47,285 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-19 04:13:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:47,285 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-19 04:13:47,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:13:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-19 04:13:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 04:13:47,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:47,287 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] [2020-08-19 04:13:47,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:13:47,288 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-19 04:13:47,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:47,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632577043] [2020-08-19 04:13:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,585 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:13:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:13:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 04:13:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 04:13:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:13:47,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632577043] [2020-08-19 04:13:47,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:13:47,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 04:13:47,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313969689] [2020-08-19 04:13:47,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:13:47,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:47,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:13:47,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:13:47,804 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-19 04:13:48,497 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:49,182 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:49,918 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:50,269 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:50,553 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:50,799 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:13:51,092 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:13:51,363 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:13:51,842 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 04:13:52,097 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:13:52,400 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:13:52,682 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 04:13:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:54,753 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-19 04:13:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:13:54,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-19 04:13:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:54,761 INFO L225 Difference]: With dead ends: 1563 [2020-08-19 04:13:54,761 INFO L226 Difference]: Without dead ends: 1056 [2020-08-19 04:13:54,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 04:13:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-19 04:13:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-19 04:13:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-19 04:13:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-19 04:13:55,001 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-19 04:13:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:55,001 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-19 04:13:55,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:13:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-19 04:13:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 04:13:55,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:55,006 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] [2020-08-19 04:13:55,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:13:55,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-19 04:13:55,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:55,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070859615] [2020-08-19 04:13:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,364 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:13:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:13:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:13:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:13:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:13:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:13:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 04:13:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 04:13:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:13:55,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070859615] [2020-08-19 04:13:55,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:55,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 04:13:55,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164118188] [2020-08-19 04:13:55,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:13:55,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:55,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:13:55,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:13:55,593 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-19 04:13:56,619 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:56,900 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:57,118 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:57,647 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:58,327 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:58,696 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:59,298 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:59,571 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:13:59,848 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:14:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:14:01,449 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-19 04:14:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 04:14:01,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-19 04:14:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:14:01,456 INFO L225 Difference]: With dead ends: 2050 [2020-08-19 04:14:01,456 INFO L226 Difference]: Without dead ends: 1076 [2020-08-19 04:14:01,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-19 04:14:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-19 04:14:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-19 04:14:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-19 04:14:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-19 04:14:01,591 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-19 04:14:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:14:01,591 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-19 04:14:01,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:14:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-19 04:14:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 04:14:01,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:14:01,594 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] [2020-08-19 04:14:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:14:01,594 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:14:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:14:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-19 04:14:01,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:14:01,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486902970] [2020-08-19 04:14:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:14:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,903 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:14:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:14:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:14:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:14:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:14:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:14:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:14:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:14:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:14:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:14:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:14:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:14:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:14:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:14:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:14:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 04:14:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 04:14:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:14:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:14:02,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486902970] [2020-08-19 04:14:02,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:14:02,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 04:14:02,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412736431] [2020-08-19 04:14:02,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:14:02,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:14:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:14:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:14:02,100 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-19 04:14:03,341 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:14:03,625 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:14:03,871 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:14:04,891 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:14:05,413 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:14:05,744 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:14:06,032 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:14:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:14:06,707 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-19 04:14:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:14:06,708 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-19 04:14:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:14:06,709 INFO L225 Difference]: With dead ends: 1575 [2020-08-19 04:14:06,710 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:14:06,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 04:14:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:14:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:14:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:14:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:14:06,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-19 04:14:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:14:06,716 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:14:06,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:14:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:14:06,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:14:06,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:14:06,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:14:07,867 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 04:14:09,411 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 04:14:09,931 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 04:14:11,535 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 04:14:12,583 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 04:14:13,712 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 04:14:14,549 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 04:14:14,707 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 04:14:14,872 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 04:14:15,029 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-19 04:14:15,676 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-19 04:14:16,866 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-19 04:14:17,467 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-19 04:14:17,647 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-19 04:14:17,807 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 04:14:18,392 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30