/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:25:35,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:25:35,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:25:35,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:25:35,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:25:35,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:25:35,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:25:35,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:25:35,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:25:35,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:25:35,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:25:35,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:25:35,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:25:35,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:25:35,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:25:35,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:25:35,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:25:35,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:25:35,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:25:35,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:25:35,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:25:35,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:25:35,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:25:35,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:25:35,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:25:35,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:25:35,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:25:35,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:25:35,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:25:35,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:25:35,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:25:35,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:25:35,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:25:35,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:25:35,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:25:35,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:25:35,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:25:35,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:25:35,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:25:35,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:25:35,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:25:35,676 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 19:25:35,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:25:35,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:25:35,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:25:35,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:25:35,722 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:25:35,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:25:35,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:25:35,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:25:35,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:25:35,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:25:35,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:25:35,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:25:35,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:25:35,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:25:35,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:25:35,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:25:35,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:25:35,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:25:35,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:25:35,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:25:35,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:25:35,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:35,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:25:35,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:25:35,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:25:35,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:25:35,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:25:35,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:25:35,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:25:35,728 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:25:36,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:25:36,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:25:36,022 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:25:36,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:25:36,024 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:25:36,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 19:25:36,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53fcc147/6034a9655dcf48378c292a74336ba5f6/FLAGd14b6ae9b [2020-08-18 19:25:36,592 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:25:36,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 19:25:36,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53fcc147/6034a9655dcf48378c292a74336ba5f6/FLAGd14b6ae9b [2020-08-18 19:25:36,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53fcc147/6034a9655dcf48378c292a74336ba5f6 [2020-08-18 19:25:36,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:25:36,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:25:36,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:36,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:25:36,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:25:36,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:36" (1/1) ... [2020-08-18 19:25:36,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:36, skipping insertion in model container [2020-08-18 19:25:36,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:36" (1/1) ... [2020-08-18 19:25:36,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:25:37,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:25:37,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:37,570 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:25:37,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:37,700 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:25:37,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37 WrapperNode [2020-08-18 19:25:37,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:37,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:25:37,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:25:37,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:25:37,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (1/1) ... [2020-08-18 19:25:37,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:25:37,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:25:37,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:25:37,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:25:37,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (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 19:25:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:25:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:25:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:25:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:25:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:25:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:25:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:25:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:25:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:25:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:25:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:25:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:25:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:25:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:25:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:25:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:25:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:25:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:25:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:25:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:25:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:25:38,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:25:38,978 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:25:38,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:38 BoogieIcfgContainer [2020-08-18 19:25:38,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:25:38,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:25:38,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:25:38,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:25:38,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:25:36" (1/3) ... [2020-08-18 19:25:38,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30695636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:38, skipping insertion in model container [2020-08-18 19:25:38,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:37" (2/3) ... [2020-08-18 19:25:38,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30695636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:38, skipping insertion in model container [2020-08-18 19:25:38,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:38" (3/3) ... [2020-08-18 19:25:38,993 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-18 19:25:39,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:25:39,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:25:39,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:25:39,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:25:39,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:25:39,053 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:25:39,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:25:39,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:25:39,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:25:39,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:25:39,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:25:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-18 19:25:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 19:25:39,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:39,089 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 19:25:39,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-18 19:25:39,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:39,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375280075] [2020-08-18 19:25:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,774 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:39,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:25:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:39,917 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 19:25:39,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375280075] [2020-08-18 19:25:39,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:39,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:25:39,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243678080] [2020-08-18 19:25:39,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:25:39,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:25:39,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:39,948 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-18 19:25:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:41,060 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-18 19:25:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:25:41,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 19:25:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:41,079 INFO L225 Difference]: With dead ends: 357 [2020-08-18 19:25:41,079 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 19:25:41,084 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 19:25:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 19:25:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 19:25:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 19:25:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-18 19:25:41,188 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-18 19:25:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:41,189 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-18 19:25:41,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:25:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-18 19:25:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 19:25:41,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:41,193 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 19:25:41,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:25:41,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:41,195 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-18 19:25:41,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:41,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075620606] [2020-08-18 19:25:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,573 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 19:25:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 19:25:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,691 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 19:25:41,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075620606] [2020-08-18 19:25:41,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:41,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:41,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664911570] [2020-08-18 19:25:41,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:41,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:41,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:41,696 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-18 19:25:42,103 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:42,480 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:42,755 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:42,995 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:44,511 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-18 19:25:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:25:44,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 19:25:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:44,515 INFO L225 Difference]: With dead ends: 330 [2020-08-18 19:25:44,516 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 19:25:44,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 19:25:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 19:25:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 19:25:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-18 19:25:44,563 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-18 19:25:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:44,564 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-18 19:25:44,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-18 19:25:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:25:44,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:44,566 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] [2020-08-18 19:25:44,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:25:44,567 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-18 19:25:44,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:44,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409525757] [2020-08-18 19:25:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,903 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:25:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:25:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 19:25:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:25:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:45,011 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 19:25:45,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409525757] [2020-08-18 19:25:45,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:45,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:25:45,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888422047] [2020-08-18 19:25:45,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:25:45,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:45,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:25:45,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:25:45,016 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-18 19:25:45,498 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:46,638 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-18 19:25:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:25:46,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-18 19:25:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:46,642 INFO L225 Difference]: With dead ends: 317 [2020-08-18 19:25:46,642 INFO L226 Difference]: Without dead ends: 200 [2020-08-18 19:25:46,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:25:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-18 19:25:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-18 19:25:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 19:25:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-18 19:25:46,678 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-18 19:25:46,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:46,679 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-18 19:25:46,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:25:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-18 19:25:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 19:25:46,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:46,682 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] [2020-08-18 19:25:46,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:25:46,682 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-18 19:25:46,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:46,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746398745] [2020-08-18 19:25:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:46,975 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:46,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:25:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 19:25:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 19:25:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,106 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 19:25:47,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746398745] [2020-08-18 19:25:47,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:47,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:47,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78669015] [2020-08-18 19:25:47,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:47,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:47,109 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-18 19:25:47,447 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:48,937 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:49,518 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-18 19:25:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:49,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-18 19:25:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:49,524 INFO L225 Difference]: With dead ends: 424 [2020-08-18 19:25:49,524 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 19:25:49,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 19:25:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-18 19:25:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-18 19:25:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-18 19:25:49,578 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-18 19:25:49,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:49,579 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-18 19:25:49,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-18 19:25:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 19:25:49,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:49,581 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] [2020-08-18 19:25:49,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:25:49,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:49,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-18 19:25:49,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:49,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367006825] [2020-08-18 19:25:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,886 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:25:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:25:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:25:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:50,052 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 19:25:50,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367006825] [2020-08-18 19:25:50,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:50,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:50,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772907871] [2020-08-18 19:25:50,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:50,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:50,055 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-18 19:25:50,553 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:51,183 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:52,150 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:52,438 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:52,848 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:53,105 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:53,803 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-18 19:25:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:25:53,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-18 19:25:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:53,807 INFO L225 Difference]: With dead ends: 524 [2020-08-18 19:25:53,807 INFO L226 Difference]: Without dead ends: 297 [2020-08-18 19:25:53,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:25:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-18 19:25:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-18 19:25:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-18 19:25:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-18 19:25:53,859 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-18 19:25:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:53,860 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-18 19:25:53,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-18 19:25:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 19:25:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:53,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:53,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:25:53,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-18 19:25:53,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:53,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105084194] [2020-08-18 19:25:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,121 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:25:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:25:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 19:25:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:54,279 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 19:25:54,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105084194] [2020-08-18 19:25:54,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:54,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:54,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180112319] [2020-08-18 19:25:54,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:54,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:54,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:54,282 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-18 19:25:55,251 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:55,492 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:55,726 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:55,964 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:56,885 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-18 19:25:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:25:56,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-18 19:25:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:56,894 INFO L225 Difference]: With dead ends: 524 [2020-08-18 19:25:56,894 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 19:25:56,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 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 19:25:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 19:25:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-18 19:25:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-18 19:25:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-18 19:25:56,966 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-18 19:25:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:56,968 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-18 19:25:56,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-18 19:25:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 19:25:56,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:56,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:56,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:25:56,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-18 19:25:56,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:56,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236748297] [2020-08-18 19:25:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,264 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:25:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:25:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:25:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 19:25:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:57,494 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 19:25:57,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236748297] [2020-08-18 19:25:57,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:57,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:25:57,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574655369] [2020-08-18 19:25:57,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:25:57,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:57,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:25:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:25:57,497 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-18 19:25:58,268 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:58,529 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:58,748 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:59,409 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:59,650 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:59,890 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:00,999 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-18 19:26:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:26:01,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-18 19:26:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:01,003 INFO L225 Difference]: With dead ends: 534 [2020-08-18 19:26:01,003 INFO L226 Difference]: Without dead ends: 303 [2020-08-18 19:26:01,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:26:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-18 19:26:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-18 19:26:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-18 19:26:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-18 19:26:01,049 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-18 19:26:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:01,050 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-18 19:26:01,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:26:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-18 19:26:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 19:26:01,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:01,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:01,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:26:01,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:01,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-18 19:26:01,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:01,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720266718] [2020-08-18 19:26:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,388 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:26:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:26:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:26:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 19:26:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,644 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 19:26:01,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720266718] [2020-08-18 19:26:01,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:26:01,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:26:01,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111898093] [2020-08-18 19:26:01,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:26:01,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:26:01,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:26:01,652 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-18 19:26:02,193 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:02,901 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:04,757 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-18 19:26:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:26:04,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-18 19:26:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:04,762 INFO L225 Difference]: With dead ends: 713 [2020-08-18 19:26:04,762 INFO L226 Difference]: Without dead ends: 478 [2020-08-18 19:26:04,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:26:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-18 19:26:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-18 19:26:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-18 19:26:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-18 19:26:04,837 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-18 19:26:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:04,837 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-18 19:26:04,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:26:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-18 19:26:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 19:26:04,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:04,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:04,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:26:04,840 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-18 19:26:04,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:04,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177865485] [2020-08-18 19:26:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,248 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:26:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:26:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:05,537 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 19:26:05,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177865485] [2020-08-18 19:26:05,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:26:05,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:26:05,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401276810] [2020-08-18 19:26:05,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:26:05,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:26:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:26:05,541 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-18 19:26:06,186 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:06,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:07,870 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:08,177 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:08,428 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:08,691 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:08,997 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:10,495 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:10,756 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:11,774 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-18 19:26:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:26:11,775 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-18 19:26:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:11,780 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 19:26:11,781 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 19:26:11,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 19:26:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 19:26:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-18 19:26:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-18 19:26:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-18 19:26:11,924 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-18 19:26:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:11,925 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-18 19:26:11,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:26:11,925 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-18 19:26:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-18 19:26:11,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:11,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:11,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:26:11,930 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:11,930 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-18 19:26:11,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:11,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166506224] [2020-08-18 19:26:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,292 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:26:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 19:26:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 19:26:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 19:26:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:26:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 19:26:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 19:26:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 19:26:12,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166506224] [2020-08-18 19:26:12,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:12,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:26:12,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968790025] [2020-08-18 19:26:12,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:26:12,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:26:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:26:12,637 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-18 19:26:13,313 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:13,648 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:26:13,906 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:26:14,154 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:26:14,743 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:15,008 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:15,920 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:16,491 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:16,907 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:17,298 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:17,552 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:17,849 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:18,400 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:18,824 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:19,451 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:19,763 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:20,238 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:20,774 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-18 19:26:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 19:26:20,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-18 19:26:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:20,785 INFO L225 Difference]: With dead ends: 1642 [2020-08-18 19:26:20,785 INFO L226 Difference]: Without dead ends: 974 [2020-08-18 19:26:20,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 19:26:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-18 19:26:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-18 19:26:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-18 19:26:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-18 19:26:20,971 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-18 19:26:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:20,971 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-18 19:26:20,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:20,972 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-18 19:26:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 19:26:20,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:20,980 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:26:20,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:26:20,980 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:20,981 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-18 19:26:20,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:20,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804201204] [2020-08-18 19:26:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,354 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:21,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:26:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 19:26:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:26:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:26:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 19:26:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:26:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:26:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 19:26:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 19:26:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 19:26:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 19:26:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 19:26:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-18 19:26:21,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804201204] [2020-08-18 19:26:21,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:21,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 19:26:21,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338294669] [2020-08-18 19:26:21,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 19:26:21,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:21,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 19:26:21,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:26:21,845 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-18 19:26:22,360 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:23,189 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:24,522 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:24,865 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:25,194 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:25,495 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:26:25,850 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:26:26,143 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:26:27,690 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:28,214 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 19:26:28,524 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:26:28,816 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 19:26:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:30,257 INFO L93 Difference]: Finished difference Result 2647 states and 3144 transitions. [2020-08-18 19:26:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 19:26:30,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2020-08-18 19:26:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:30,272 INFO L225 Difference]: With dead ends: 2647 [2020-08-18 19:26:30,273 INFO L226 Difference]: Without dead ends: 1788 [2020-08-18 19:26:30,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 19:26:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-18 19:26:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1747. [2020-08-18 19:26:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-08-18 19:26:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2006 transitions. [2020-08-18 19:26:30,695 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2006 transitions. Word has length 331 [2020-08-18 19:26:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:30,696 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2006 transitions. [2020-08-18 19:26:30,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 19:26:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2006 transitions. [2020-08-18 19:26:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 19:26:30,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:30,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:26:30,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:26:30,707 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -944820455, now seen corresponding path program 1 times [2020-08-18 19:26:30,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:30,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227217209] [2020-08-18 19:26:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,007 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:31,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:26:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 19:26:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 19:26:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:26:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:26:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-18 19:26:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:26:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:26:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 19:26:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 19:26:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 19:26:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 19:26:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-08-18 19:26:31,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227217209] [2020-08-18 19:26:31,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:31,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 19:26:31,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987874285] [2020-08-18 19:26:31,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 19:26:31,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:31,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 19:26:31,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:26:31,569 INFO L87 Difference]: Start difference. First operand 1747 states and 2006 transitions. Second operand 19 states. [2020-08-18 19:26:32,145 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:32,514 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:32,782 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:33,041 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:33,721 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:34,988 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:35,325 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192