/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:59:30,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:59:30,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:59:30,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:59:30,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:59:30,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:59:30,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:59:30,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:59:30,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:59:30,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:59:30,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:59:30,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:59:30,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:59:30,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:59:30,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:59:30,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:59:30,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:59:30,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:59:30,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:59:30,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:59:30,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:59:30,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:59:30,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:59:30,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:59:30,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:59:30,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:59:30,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:59:30,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:59:30,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:59:30,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:59:30,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:59:30,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:59:30,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:59:30,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:59:30,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:59:30,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:59:30,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:59:30,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:59:30,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:59:30,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:59:30,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:59:30,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:59:30,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:59:30,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:59:30,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:59:30,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:59:30,591 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:59:30,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:59:30,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:59:30,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:59:30,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:59:30,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:59:30,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:59:30,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:59:30,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:59:30,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:59:30,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:59:30,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:59:30,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:59:30,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:59:30,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:59:30,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:59:30,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:59:30,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:59:30,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:59:30,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:59:30,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:59:30,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:59:30,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:59:30,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:59:30,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:59:30,597 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:59:30,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:59:30,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:59:30,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:59:30,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:59:30,968 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:59:30,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 16:59:31,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/464c7c29d/b6bfefe4324e439eb5e515b8a3a507bd/FLAGb94d0c27d [2020-08-18 16:59:31,587 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:59:31,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 16:59:31,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/464c7c29d/b6bfefe4324e439eb5e515b8a3a507bd/FLAGb94d0c27d [2020-08-18 16:59:31,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/464c7c29d/b6bfefe4324e439eb5e515b8a3a507bd [2020-08-18 16:59:31,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:59:31,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:59:31,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:59:31,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:59:31,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:59:31,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:59:31" (1/1) ... [2020-08-18 16:59:31,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:31, skipping insertion in model container [2020-08-18 16:59:31,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:59:31" (1/1) ... [2020-08-18 16:59:31,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:59:31,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:59:32,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:59:32,305 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:59:32,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:59:32,519 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:59:32,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32 WrapperNode [2020-08-18 16:59:32,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:59:32,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:59:32,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:59:32,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:59:32,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... [2020-08-18 16:59:32,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:59:32,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:59:32,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:59:32,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:59:32,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:59:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:59:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:59:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:59:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:59:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:59:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:59:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:59:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:59:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:59:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:59:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:59:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:59:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:59:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:59:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:59:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:59:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:59:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:59:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:59:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:59:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:59:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:59:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:59:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:59:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:59:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:59:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:59:33,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:59:33,724 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:59:33,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:59:33 BoogieIcfgContainer [2020-08-18 16:59:33,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:59:33,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:59:33,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:59:33,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:59:33,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:59:31" (1/3) ... [2020-08-18 16:59:33,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e0fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:59:33, skipping insertion in model container [2020-08-18 16:59:33,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:32" (2/3) ... [2020-08-18 16:59:33,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e0fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:59:33, skipping insertion in model container [2020-08-18 16:59:33,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:59:33" (3/3) ... [2020-08-18 16:59:33,739 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-18 16:59:33,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:59:33,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:59:33,773 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:59:33,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:59:33,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:59:33,800 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:59:33,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:59:33,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:59:33,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:59:33,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:59:33,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:59:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 16:59:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:59:33,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:33,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:33,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:33,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-18 16:59:33,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:33,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461221451] [2020-08-18 16:59:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,526 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:34,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:59:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:59:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:59:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:34,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461221451] [2020-08-18 16:59:34,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:34,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:59:34,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156389696] [2020-08-18 16:59:34,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:59:34,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:34,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:59:34,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:59:34,713 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 16:59:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:35,900 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-18 16:59:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:59:35,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:59:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:35,918 INFO L225 Difference]: With dead ends: 308 [2020-08-18 16:59:35,918 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 16:59:35,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:59:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 16:59:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-18 16:59:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 16:59:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-18 16:59:36,016 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-18 16:59:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:36,017 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-18 16:59:36,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:59:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-18 16:59:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:59:36,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:36,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:36,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:59:36,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-18 16:59:36,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:36,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20167559] [2020-08-18 16:59:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,406 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:59:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:59:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:59:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:36,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20167559] [2020-08-18 16:59:36,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:36,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:59:36,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628978596] [2020-08-18 16:59:36,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:59:36,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:36,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:59:36,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:59:36,488 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-18 16:59:36,957 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:37,806 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-18 16:59:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:59:37,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:59:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:37,811 INFO L225 Difference]: With dead ends: 244 [2020-08-18 16:59:37,811 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 16:59:37,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:59:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 16:59:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-18 16:59:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 16:59:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-18 16:59:37,850 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-18 16:59:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:37,850 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-18 16:59:37,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:59:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-18 16:59:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:59:37,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:37,853 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] [2020-08-18 16:59:37,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:59:37,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:37,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-18 16:59:37,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:37,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215398679] [2020-08-18 16:59:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,210 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:59:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:59:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:38,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215398679] [2020-08-18 16:59:38,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:38,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:38,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859038870] [2020-08-18 16:59:38,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:38,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:38,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:38,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:38,304 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-18 16:59:38,697 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:39,026 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:39,294 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:39,524 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:40,390 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:41,918 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-18 16:59:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:59:41,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:59:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:41,923 INFO L225 Difference]: With dead ends: 435 [2020-08-18 16:59:41,924 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 16:59:41,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:59:41,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 16:59:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-18 16:59:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 16:59:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-18 16:59:41,987 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-18 16:59:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:41,987 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-18 16:59:41,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-18 16:59:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:59:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:41,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:41,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:59:41,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-18 16:59:41,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:41,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504838500] [2020-08-18 16:59:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,286 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:59:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:59:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:59:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:59:42,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504838500] [2020-08-18 16:59:42,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:42,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:42,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265659472] [2020-08-18 16:59:42,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:42,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:42,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:42,395 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-18 16:59:42,826 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:43,470 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:44,356 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:44,590 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:44,875 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:45,147 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:45,647 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-18 16:59:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:59:45,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:59:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:45,659 INFO L225 Difference]: With dead ends: 679 [2020-08-18 16:59:45,659 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 16:59:45,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:59:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 16:59:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-18 16:59:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 16:59:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-18 16:59:45,756 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-18 16:59:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:45,757 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-18 16:59:45,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-18 16:59:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 16:59:45,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:45,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:45,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:59:45,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-18 16:59:45,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:45,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107230632] [2020-08-18 16:59:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,016 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:59:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:59:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:46,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107230632] [2020-08-18 16:59:46,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:46,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:46,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211573344] [2020-08-18 16:59:46,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:46,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:46,247 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-18 16:59:46,670 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:47,636 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:47,884 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:59:48,141 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:48,395 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:49,708 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-18 16:59:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:59:49,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 16:59:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:49,721 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 16:59:49,721 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 16:59:49,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:59:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 16:59:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-18 16:59:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-18 16:59:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-18 16:59:49,849 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-18 16:59:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:49,849 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-18 16:59:49,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-18 16:59:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 16:59:49,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:49,853 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:49,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:59:49,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-18 16:59:49,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:49,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228823399] [2020-08-18 16:59:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,110 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:59:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:59:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:50,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228823399] [2020-08-18 16:59:50,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:50,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:50,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832222642] [2020-08-18 16:59:50,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:50,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:50,275 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-18 16:59:51,445 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:51,692 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:59:51,958 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:52,236 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:52,910 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-18 16:59:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:59:52,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 16:59:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:52,919 INFO L225 Difference]: With dead ends: 1536 [2020-08-18 16:59:52,920 INFO L226 Difference]: Without dead ends: 847 [2020-08-18 16:59:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:59:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-18 16:59:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-18 16:59:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-18 16:59:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-18 16:59:53,123 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-18 16:59:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:53,125 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-18 16:59:53,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-18 16:59:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 16:59:53,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:53,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:53,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:59:53,134 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:53,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-18 16:59:53,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:53,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892136992] [2020-08-18 16:59:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,488 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:59:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:59:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:53,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892136992] [2020-08-18 16:59:53,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:53,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:59:53,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833617909] [2020-08-18 16:59:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:59:53,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:59:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:59:53,656 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-18 16:59:54,219 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:54,501 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:54,747 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:55,458 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:55,710 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:55,950 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:56,938 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-18 16:59:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:59:56,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-18 16:59:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:56,946 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 16:59:56,946 INFO L226 Difference]: Without dead ends: 651 [2020-08-18 16:59:56,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:59:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-18 16:59:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-18 16:59:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-18 16:59:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-18 16:59:57,046 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-18 16:59:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:57,047 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-18 16:59:57,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:59:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-18 16:59:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-18 16:59:57,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:57,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:57,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:59:57,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-18 16:59:57,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:57,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628523592] [2020-08-18 16:59:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,407 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:59:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:59:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:59:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 16:59:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:59:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:57,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628523592] [2020-08-18 16:59:57,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:57,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:59:57,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855515304] [2020-08-18 16:59:57,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:59:57,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:59:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:59:57,617 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-18 16:59:58,106 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:58,752 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:59,393 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:59,809 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:00,129 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:00,411 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:00,707 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:02,043 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:02,337 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:02,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:02,907 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-18 17:00:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:00:02,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-18 17:00:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:02,915 INFO L225 Difference]: With dead ends: 1691 [2020-08-18 17:00:02,915 INFO L226 Difference]: Without dead ends: 1313 [2020-08-18 17:00:02,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 17:00:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-18 17:00:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-18 17:00:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-18 17:00:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-18 17:00:03,118 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-18 17:00:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:03,122 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-18 17:00:03,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:00:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-18 17:00:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 17:00:03,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:03,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:03,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:00:03,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:03,127 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-18 17:00:03,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:03,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583829098] [2020-08-18 17:00:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,553 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 17:00:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 17:00:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 17:00:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 17:00:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 17:00:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 17:00:03,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583829098] [2020-08-18 17:00:03,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:03,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:00:03,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875679209] [2020-08-18 17:00:03,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:00:03,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:03,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:00:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:03,871 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-18 17:00:04,532 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:04,953 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:05,202 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:05,457 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:06,045 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:06,401 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:06,759 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:07,032 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:08,102 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:08,562 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:08,877 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:09,192 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:09,640 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:10,127 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:10,369 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:10,614 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:10,884 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:11,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:11,443 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-18 17:00:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 17:00:11,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-18 17:00:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:11,450 INFO L225 Difference]: With dead ends: 2225 [2020-08-18 17:00:11,451 INFO L226 Difference]: Without dead ends: 1222 [2020-08-18 17:00:11,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 17:00:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-18 17:00:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-18 17:00:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 17:00:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-18 17:00:11,671 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-18 17:00:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:11,672 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-18 17:00:11,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:00:11,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-18 17:00:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-18 17:00:11,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:11,681 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:11,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:00:11,681 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:11,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:11,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-18 17:00:11,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:11,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958089665] [2020-08-18 17:00:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,034 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 17:00:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 17:00:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 17:00:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-18 17:00:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 17:00:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 17:00:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 17:00:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 17:00:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 17:00:12,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958089665] [2020-08-18 17:00:12,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:12,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:00:12,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103682401] [2020-08-18 17:00:12,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:00:12,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:12,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:00:12,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:12,694 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-18 17:00:14,402 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:14,671 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:14,909 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:15,146 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:16,260 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:17,963 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-18 17:00:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 17:00:17,964 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-18 17:00:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:17,974 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 17:00:17,974 INFO L226 Difference]: Without dead ends: 1752 [2020-08-18 17:00:17,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 17:00:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-18 17:00:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-18 17:00:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-18 17:00:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-18 17:00:18,269 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-18 17:00:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:18,270 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-18 17:00:18,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:00:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-18 17:00:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-18 17:00:18,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:18,285 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:18,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:00:18,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-18 17:00:18,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:18,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199681382] [2020-08-18 17:00:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,642 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 17:00:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:00:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 17:00:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-18 17:00:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-18 17:00:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 17:00:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 17:00:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 17:00:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 17:00:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-18 17:00:19,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199681382] [2020-08-18 17:00:19,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:19,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 17:00:19,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176320004] [2020-08-18 17:00:19,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 17:00:19,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:19,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 17:00:19,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 17:00:19,181 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-18 17:00:20,027 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:20,333 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:20,593 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:20,844 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:21,496 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:22,550 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:22,813 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:23,297 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:23,938 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:24,559 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:24,795 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:25,588 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-18 17:00:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 17:00:25,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-18 17:00:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:25,600 INFO L225 Difference]: With dead ends: 2555 [2020-08-18 17:00:25,600 INFO L226 Difference]: Without dead ends: 1457 [2020-08-18 17:00:25,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 17:00:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-18 17:00:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-18 17:00:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-18 17:00:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-18 17:00:25,855 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-18 17:00:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:25,856 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-18 17:00:25,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 17:00:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-18 17:00:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-18 17:00:25,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:25,866 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:25,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:00:25,866 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-18 17:00:25,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:25,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789615627] [2020-08-18 17:00:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,146 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 17:00:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:00:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 17:00:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-18 17:00:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-18 17:00:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 17:00:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 17:00:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 17:00:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-18 17:00:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat