/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:43:28,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:43:28,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:43:28,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:43:28,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:43:28,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:43:28,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:43:28,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:43:28,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:43:28,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:43:28,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:43:28,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:43:28,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:43:28,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:43:28,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:43:28,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:43:28,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:43:28,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:43:28,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:43:28,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:43:28,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:43:28,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:43:28,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:43:28,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:43:28,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:43:28,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:43:28,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:43:28,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:43:28,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:43:28,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:43:28,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:43:28,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:43:28,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:43:28,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:43:28,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:43:28,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:43:28,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:43:28,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:43:28,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:43:28,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:43:28,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:43:28,757 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 [2020-08-22 03:43:28,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:43:28,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:43:28,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:43:28,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:43:28,780 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:43:28,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:43:28,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:43:28,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:43:28,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:43:28,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:43:28,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:43:28,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:43:28,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:43:28,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:43:28,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:43:28,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:43:28,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:43:28,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:43:28,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:43:28,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:43:28,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:43:28,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:43:28,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:43:28,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:43:28,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:43:28,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:43:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:43:28,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:43:28,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:43:28,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:43:29,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:43:29,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:43:29,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:43:29,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:43:29,115 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:43:29,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 03:43:29,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c162542/d427c6b8a307463b8d6aa8f8241b37d1/FLAG5ea6b7f47 [2020-08-22 03:43:29,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:43:29,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 03:43:29,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c162542/d427c6b8a307463b8d6aa8f8241b37d1/FLAG5ea6b7f47 [2020-08-22 03:43:30,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7c162542/d427c6b8a307463b8d6aa8f8241b37d1 [2020-08-22 03:43:30,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:43:30,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:43:30,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:30,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:43:30,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:43:30,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30, skipping insertion in model container [2020-08-22 03:43:30,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:43:30,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:43:30,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:30,631 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:43:30,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:43:30,800 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:43:30,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30 WrapperNode [2020-08-22 03:43:30,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:43:30,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:43:30,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:43:30,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:43:30,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (1/1) ... [2020-08-22 03:43:30,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:43:30,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:43:30,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:43:30,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:43:30,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (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 [2020-08-22 03:43:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:43:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:43:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:43:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:43:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:43:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:43:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:43:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:43:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:43:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:43:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:43:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:43:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:43:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:43:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:43:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:43:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:43:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:43:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:43:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:43:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:43:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:43:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:43:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:43:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:43:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:43:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:43:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:43:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:43:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:43:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:43:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:43:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:43:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:43:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:43:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:43:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:43:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:43:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:43:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:43:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:43:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:43:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:43:32,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:43:32,087 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:43:32,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:32 BoogieIcfgContainer [2020-08-22 03:43:32,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:43:32,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:43:32,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:43:32,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:43:32,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:43:30" (1/3) ... [2020-08-22 03:43:32,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319814ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:32, skipping insertion in model container [2020-08-22 03:43:32,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:43:30" (2/3) ... [2020-08-22 03:43:32,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319814ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:43:32, skipping insertion in model container [2020-08-22 03:43:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:43:32" (3/3) ... [2020-08-22 03:43:32,101 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2020-08-22 03:43:32,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:43:32,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:43:32,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:43:32,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:43:32,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:43:32,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:43:32,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:43:32,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:43:32,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:43:32,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:43:32,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:43:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-22 03:43:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:43:32,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:32,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:32,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:32,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2007114508, now seen corresponding path program 1 times [2020-08-22 03:43:32,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:32,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973889014] [2020-08-22 03:43:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,851 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:43:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:32,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973889014] [2020-08-22 03:43:32,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:32,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:43:32,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090655982] [2020-08-22 03:43:32,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:43:32,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:43:32,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:32,980 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-22 03:43:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:34,273 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-22 03:43:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:43:34,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:43:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:34,301 INFO L225 Difference]: With dead ends: 323 [2020-08-22 03:43:34,302 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 03:43:34,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:43:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 03:43:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-08-22 03:43:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 03:43:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-22 03:43:34,426 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 46 [2020-08-22 03:43:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:34,426 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-22 03:43:34,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:43:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-22 03:43:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:43:34,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:34,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:34,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:43:34,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash 622418136, now seen corresponding path program 1 times [2020-08-22 03:43:34,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:34,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229788316] [2020-08-22 03:43:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,840 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:43:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:34,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229788316] [2020-08-22 03:43:34,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:34,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:43:34,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254113618] [2020-08-22 03:43:34,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:43:34,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:34,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:43:34,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:43:34,886 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-22 03:43:35,296 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:36,246 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-22 03:43:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:43:36,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:43:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:36,251 INFO L225 Difference]: With dead ends: 250 [2020-08-22 03:43:36,251 INFO L226 Difference]: Without dead ends: 159 [2020-08-22 03:43:36,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:43:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-22 03:43:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 130. [2020-08-22 03:43:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 03:43:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-22 03:43:36,293 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 47 [2020-08-22 03:43:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:36,294 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-22 03:43:36,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:43:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-22 03:43:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:43:36,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:36,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:36,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:43:36,297 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash -943300313, now seen corresponding path program 1 times [2020-08-22 03:43:36,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:36,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550128923] [2020-08-22 03:43:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,679 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:36,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:43:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:36,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550128923] [2020-08-22 03:43:36,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:36,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:43:36,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790353026] [2020-08-22 03:43:36,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:43:36,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:36,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:43:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:43:36,808 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-22 03:43:37,137 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:37,465 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:37,696 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:37,934 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:38,655 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:40,541 INFO L93 Difference]: Finished difference Result 446 states and 552 transitions. [2020-08-22 03:43:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:43:40,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:43:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:40,548 INFO L225 Difference]: With dead ends: 446 [2020-08-22 03:43:40,548 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 03:43:40,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:43:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 03:43:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2020-08-22 03:43:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-08-22 03:43:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2020-08-22 03:43:40,622 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 51 [2020-08-22 03:43:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:40,622 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2020-08-22 03:43:40,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:43:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2020-08-22 03:43:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:43:40,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:40,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:40,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:43:40,626 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:40,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1373874698, now seen corresponding path program 1 times [2020-08-22 03:43:40,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:40,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583945906] [2020-08-22 03:43:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:40,944 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:40,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:43:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:43:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:41,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583945906] [2020-08-22 03:43:41,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:41,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:43:41,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291519260] [2020-08-22 03:43:41,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:41,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:41,087 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 12 states. [2020-08-22 03:43:41,482 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:41,807 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:42,084 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:42,368 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:42,919 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:43,683 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:44,041 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:44,368 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:44,675 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:44,930 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:45,422 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:45,785 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:46,045 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:47,942 INFO L93 Difference]: Finished difference Result 1133 states and 1552 transitions. [2020-08-22 03:43:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:43:47,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 03:43:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:47,954 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 03:43:47,954 INFO L226 Difference]: Without dead ends: 879 [2020-08-22 03:43:47,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:43:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-22 03:43:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 782. [2020-08-22 03:43:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-08-22 03:43:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 994 transitions. [2020-08-22 03:43:48,153 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 994 transitions. Word has length 57 [2020-08-22 03:43:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:48,154 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 994 transitions. [2020-08-22 03:43:48,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 994 transitions. [2020-08-22 03:43:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:43:48,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:48,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:48,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:43:48,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:48,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1561170436, now seen corresponding path program 1 times [2020-08-22 03:43:48,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:48,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3799119] [2020-08-22 03:43:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,446 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:43:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 03:43:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:43:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:48,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3799119] [2020-08-22 03:43:48,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:48,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:43:48,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525773308] [2020-08-22 03:43:48,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:43:48,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:43:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:43:48,525 INFO L87 Difference]: Start difference. First operand 782 states and 994 transitions. Second operand 6 states. [2020-08-22 03:43:48,814 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:50,584 INFO L93 Difference]: Finished difference Result 1911 states and 2577 transitions. [2020-08-22 03:43:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:43:50,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 03:43:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:50,592 INFO L225 Difference]: With dead ends: 1911 [2020-08-22 03:43:50,592 INFO L226 Difference]: Without dead ends: 1153 [2020-08-22 03:43:50,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:43:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-08-22 03:43:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1066. [2020-08-22 03:43:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-22 03:43:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1328 transitions. [2020-08-22 03:43:50,876 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1328 transitions. Word has length 61 [2020-08-22 03:43:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:50,877 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1328 transitions. [2020-08-22 03:43:50,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:43:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1328 transitions. [2020-08-22 03:43:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 03:43:50,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:50,882 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:43:50,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:43:50,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1580345337, now seen corresponding path program 1 times [2020-08-22 03:43:50,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:50,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868536002] [2020-08-22 03:43:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,281 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 03:43:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 03:43:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 03:43:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 03:43:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 03:43:51,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868536002] [2020-08-22 03:43:51,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:51,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 03:43:51,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191970897] [2020-08-22 03:43:51,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:43:51,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:43:51,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:51,510 INFO L87 Difference]: Start difference. First operand 1066 states and 1328 transitions. Second operand 10 states. [2020-08-22 03:43:52,084 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 03:43:52,635 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:54,707 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:56,292 INFO L93 Difference]: Finished difference Result 2035 states and 2637 transitions. [2020-08-22 03:43:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:43:56,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 03:43:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:56,307 INFO L225 Difference]: With dead ends: 2035 [2020-08-22 03:43:56,307 INFO L226 Difference]: Without dead ends: 1270 [2020-08-22 03:43:56,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 03:43:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-08-22 03:43:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2020-08-22 03:43:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-08-22 03:43:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1439 transitions. [2020-08-22 03:43:56,545 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1439 transitions. Word has length 88 [2020-08-22 03:43:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:56,547 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1439 transitions. [2020-08-22 03:43:56,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:43:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1439 transitions. [2020-08-22 03:43:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 03:43:56,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:56,554 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:43:56,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:43:56,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash 219208330, now seen corresponding path program 1 times [2020-08-22 03:43:56,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:56,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981440491] [2020-08-22 03:43:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,844 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:43:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:43:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:43:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:43:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 03:43:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:43:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:43:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 03:43:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 03:43:57,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981440491] [2020-08-22 03:43:57,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:57,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 03:43:57,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588120713] [2020-08-22 03:43:57,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:43:57,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:57,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:43:57,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:57,061 INFO L87 Difference]: Start difference. First operand 1173 states and 1439 transitions. Second operand 10 states. [2020-08-22 03:43:58,094 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:58,348 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:58,622 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:58,880 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:00,011 INFO L93 Difference]: Finished difference Result 2475 states and 3246 transitions. [2020-08-22 03:44:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:44:00,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 145 [2020-08-22 03:44:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:00,024 INFO L225 Difference]: With dead ends: 2475 [2020-08-22 03:44:00,024 INFO L226 Difference]: Without dead ends: 1326 [2020-08-22 03:44:00,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:44:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-08-22 03:44:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1203. [2020-08-22 03:44:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-08-22 03:44:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1473 transitions. [2020-08-22 03:44:00,311 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1473 transitions. Word has length 145 [2020-08-22 03:44:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:00,311 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1473 transitions. [2020-08-22 03:44:00,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:44:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1473 transitions. [2020-08-22 03:44:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 03:44:00,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:00,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:44:00,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:44:00,318 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:00,319 INFO L82 PathProgramCache]: Analyzing trace with hash -837522872, now seen corresponding path program 1 times [2020-08-22 03:44:00,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:00,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991809956] [2020-08-22 03:44:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,607 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:44:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:44:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:44:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:44:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 03:44:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:44:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 03:44:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 03:44:00,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991809956] [2020-08-22 03:44:00,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:00,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:44:00,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801867077] [2020-08-22 03:44:00,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:44:00,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:44:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:00,852 INFO L87 Difference]: Start difference. First operand 1203 states and 1473 transitions. Second operand 12 states. [2020-08-22 03:44:01,324 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:01,560 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:01,809 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:02,475 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:02,763 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:03,013 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:04,111 INFO L93 Difference]: Finished difference Result 2205 states and 2787 transitions. [2020-08-22 03:44:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:44:04,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-08-22 03:44:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:04,118 INFO L225 Difference]: With dead ends: 2205 [2020-08-22 03:44:04,119 INFO L226 Difference]: Without dead ends: 1026 [2020-08-22 03:44:04,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:44:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-08-22 03:44:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 970. [2020-08-22 03:44:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 03:44:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1172 transitions. [2020-08-22 03:44:04,329 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1172 transitions. Word has length 145 [2020-08-22 03:44:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:04,330 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1172 transitions. [2020-08-22 03:44:04,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:44:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1172 transitions. [2020-08-22 03:44:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 03:44:04,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:04,334 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:44:04,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:44:04,335 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash -872576729, now seen corresponding path program 1 times [2020-08-22 03:44:04,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:04,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325170632] [2020-08-22 03:44:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,631 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:44:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:44:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:44:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 03:44:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:44:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 03:44:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 03:44:04,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325170632] [2020-08-22 03:44:04,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:04,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:44:04,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144573516] [2020-08-22 03:44:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:44:04,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:04,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:44:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:44:04,923 INFO L87 Difference]: Start difference. First operand 970 states and 1172 transitions. Second operand 13 states. [2020-08-22 03:44:05,389 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:06,063 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:07,432 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:07,773 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:08,037 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:08,287 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:08,585 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:08,827 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:09,705 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:09,934 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:10,185 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:10,412 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:11,013 INFO L93 Difference]: Finished difference Result 2803 states and 3512 transitions. [2020-08-22 03:44:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 03:44:11,013 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-08-22 03:44:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:11,024 INFO L225 Difference]: With dead ends: 2803 [2020-08-22 03:44:11,024 INFO L226 Difference]: Without dead ends: 1857 [2020-08-22 03:44:11,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 03:44:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-08-22 03:44:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1755. [2020-08-22 03:44:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-08-22 03:44:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2091 transitions. [2020-08-22 03:44:11,381 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2091 transitions. Word has length 145 [2020-08-22 03:44:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:11,383 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2091 transitions. [2020-08-22 03:44:11,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:44:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2091 transitions. [2020-08-22 03:44:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 03:44:11,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:11,389 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:44:11,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:44:11,389 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1489780363, now seen corresponding path program 1 times [2020-08-22 03:44:11,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:11,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65889999] [2020-08-22 03:44:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,671 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:44:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:44:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:11,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:44:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:44:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 03:44:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 03:44:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 03:44:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 03:44:12,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65889999] [2020-08-22 03:44:12,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:12,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 03:44:12,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657565177] [2020-08-22 03:44:12,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 03:44:12,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 03:44:12,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:44:12,197 INFO L87 Difference]: Start difference. First operand 1755 states and 2091 transitions. Second operand 18 states. [2020-08-22 03:44:12,700 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:13,029 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:44:13,275 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:13,525 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:14,171 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:15,743 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:16,081 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:16,349 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:16,593 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:16,968 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:17,224 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:44:17,731 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 03:44:18,220 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 03:44:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:19,831 INFO L93 Difference]: Finished difference Result 3380 states and 4249 transitions. [2020-08-22 03:44:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 03:44:19,832 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2020-08-22 03:44:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:19,843 INFO L225 Difference]: With dead ends: 3380 [2020-08-22 03:44:19,843 INFO L226 Difference]: Without dead ends: 1959 [2020-08-22 03:44:19,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 03:44:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-08-22 03:44:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1677. [2020-08-22 03:44:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 03:44:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1989 transitions. [2020-08-22 03:44:20,203 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1989 transitions. Word has length 149 [2020-08-22 03:44:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:20,204 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1989 transitions. [2020-08-22 03:44:20,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 03:44:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1989 transitions. [2020-08-22 03:44:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 03:44:20,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:20,209 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:44:20,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:44:20,210 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:20,210 INFO L82 PathProgramCache]: Analyzing trace with hash -913393781, now seen corresponding path program 2 times [2020-08-22 03:44:20,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:20,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723178078] [2020-08-22 03:44:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,494 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:44:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:44:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:44:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:44:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 03:44:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 03:44:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 03:44:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 03:44:20,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723178078] [2020-08-22 03:44:20,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:20,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 03:44:20,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689207663] [2020-08-22 03:44:20,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:44:20,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:20,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:44:20,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:44:20,666 INFO L87 Difference]: Start difference. First operand 1677 states and 1989 transitions. Second operand 11 states. [2020-08-22 03:44:21,430 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:23,414 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:23,649 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:44:23,906 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:24,158 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:44:24,404 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:44:25,011 INFO L93 Difference]: Finished difference Result 1987 states and 2521 transitions. [2020-08-22 03:44:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 03:44:25,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-22 03:44:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:44:25,022 INFO L225 Difference]: With dead ends: 1987 [2020-08-22 03:44:25,023 INFO L226 Difference]: Without dead ends: 1984 [2020-08-22 03:44:25,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 03:44:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-08-22 03:44:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1677. [2020-08-22 03:44:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 03:44:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1979 transitions. [2020-08-22 03:44:25,354 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1979 transitions. Word has length 149 [2020-08-22 03:44:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:44:25,355 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1979 transitions. [2020-08-22 03:44:25,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:44:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1979 transitions. [2020-08-22 03:44:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 03:44:25,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:44:25,360 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 03:44:25,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:44:25,361 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:44:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:44:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425787, now seen corresponding path program 1 times [2020-08-22 03:44:25,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:44:25,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753799900] [2020-08-22 03:44:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:44:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,717 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:44:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:44:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:44:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:44:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:44:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:44:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:44:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:44:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:44:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:44:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:44:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 03:44:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:44:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:44:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:44:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 03:44:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 03:44:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:44:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 03:44:25,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753799900] [2020-08-22 03:44:25,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:44:25,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:44:25,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028167675] [2020-08-22 03:44:25,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:44:25,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:44:25,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:44:25,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:44:25,962 INFO L87 Difference]: Start difference. First operand 1677 states and 1979 transitions. Second operand 12 states. [2020-08-22 03:44:26,596 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:44:27,432 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189