./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:35:02,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:35:02,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:35:02,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:35:02,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:35:02,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:35:02,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:35:02,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:35:02,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:35:02,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:35:02,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:35:02,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:35:02,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:35:02,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:35:02,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:35:02,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:35:02,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:35:02,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:35:02,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:35:02,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:35:02,114 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:35:02,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:35:02,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:35:02,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:35:02,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:35:02,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:35:02,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:35:02,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:35:02,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:35:02,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:35:02,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:35:02,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:35:02,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:35:02,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:35:02,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:35:02,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:35:02,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:35:02,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:35:02,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:35:02,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:35:02,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:35:02,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:35:02,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:35:02,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:35:02,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:35:02,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:35:02,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:35:02,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:35:02,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:35:02,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:35:02,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:35:02,176 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:35:02,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:35:02,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:35:02,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:35:02,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:35:02,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:35:02,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:35:02,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:35:02,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:35:02,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:35:02,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:35:02,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:35:02,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:35:02,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:35:02,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:35:02,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:35:02,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:35:02,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:35:02,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:35:02,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:35:02,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:35:02,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:35:02,181 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:35:02,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:35:02,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:35:02,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2022-07-21 04:35:02,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:35:02,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:35:02,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:35:02,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:35:02,523 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:35:02,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-07-21 04:35:02,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6a85a26/bbef96427aab4723b295d32b5206fd17/FLAG820b6bdab [2022-07-21 04:35:03,181 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:35:03,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-07-21 04:35:03,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6a85a26/bbef96427aab4723b295d32b5206fd17/FLAG820b6bdab [2022-07-21 04:35:03,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6a85a26/bbef96427aab4723b295d32b5206fd17 [2022-07-21 04:35:03,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:35:03,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:35:03,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:35:03,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:35:03,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:35:03,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:35:03" (1/1) ... [2022-07-21 04:35:03,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756bd99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:03, skipping insertion in model container [2022-07-21 04:35:03,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:35:03" (1/1) ... [2022-07-21 04:35:03,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:35:03,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:35:03,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-07-21 04:35:04,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:35:04,225 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:35:04,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-07-21 04:35:04,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:35:04,390 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:35:04,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04 WrapperNode [2022-07-21 04:35:04,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:35:04,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:35:04,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:35:04,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:35:04,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,494 INFO L137 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 905 [2022-07-21 04:35:04,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:35:04,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:35:04,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:35:04,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:35:04,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:35:04,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:35:04,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:35:04,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:35:04,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (1/1) ... [2022-07-21 04:35:04,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:35:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:35:04,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 04:35:04,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 04:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-21 04:35:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-21 04:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:35:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:35:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:35:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:35:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-21 04:35:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-21 04:35:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:35:04,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:35:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:35:04,671 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:35:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:35:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:35:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:35:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:35:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:35:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:35:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:35:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:35:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:35:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:35:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:35:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:35:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-21 04:35:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-21 04:35:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:35:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:35:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-21 04:35:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-21 04:35:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:35:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:35:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:35:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:35:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:35:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:35:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:35:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:35:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:35:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:35:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:35:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:35:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:35:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:35:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:35:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:35:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:35:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-21 04:35:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-21 04:35:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:35:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:35:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:35:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:35:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:35:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:35:04,885 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:35:04,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:35:05,783 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:35:05,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:35:05,803 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:35:05,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:35:05 BoogieIcfgContainer [2022-07-21 04:35:05,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:35:05,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:35:05,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:35:05,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:35:05,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:35:03" (1/3) ... [2022-07-21 04:35:05,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adc075e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:35:05, skipping insertion in model container [2022-07-21 04:35:05,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:04" (2/3) ... [2022-07-21 04:35:05,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adc075e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:35:05, skipping insertion in model container [2022-07-21 04:35:05,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:35:05" (3/3) ... [2022-07-21 04:35:05,815 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2022-07-21 04:35:05,827 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:35:05,828 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:35:05,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:35:05,913 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c80685d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1271e980 [2022-07-21 04:35:05,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:35:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-07-21 04:35:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 04:35:05,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:05,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:05,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1321862527, now seen corresponding path program 1 times [2022-07-21 04:35:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:05,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261600293] [2022-07-21 04:35:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:35:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:35:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:35:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261600293] [2022-07-21 04:35:06,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261600293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:06,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:06,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516075230] [2022-07-21 04:35:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:06,822 INFO L87 Difference]: Start difference. First operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:12,955 INFO L93 Difference]: Finished difference Result 1464 states and 2513 transitions. [2022-07-21 04:35:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:12,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-07-21 04:35:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:12,977 INFO L225 Difference]: With dead ends: 1464 [2022-07-21 04:35:12,977 INFO L226 Difference]: Without dead ends: 872 [2022-07-21 04:35:12,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:12,991 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1549 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:12,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2956 Invalid, 5316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [461 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-21 04:35:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-21 04:35:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 599. [2022-07-21 04:35:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 482 states have internal predecessors, (769), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-21 04:35:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2022-07-21 04:35:13,159 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 67 [2022-07-21 04:35:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:13,160 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2022-07-21 04:35:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2022-07-21 04:35:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:35:13,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:13,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:13,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:35:13,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:13,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1068252313, now seen corresponding path program 1 times [2022-07-21 04:35:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:13,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352499881] [2022-07-21 04:35:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:35:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:35:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:13,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:13,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352499881] [2022-07-21 04:35:13,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352499881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:13,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:13,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522278332] [2022-07-21 04:35:13,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:13,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:13,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:13,572 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:19,896 INFO L93 Difference]: Finished difference Result 1458 states and 2477 transitions. [2022-07-21 04:35:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:35:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-07-21 04:35:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:19,904 INFO L225 Difference]: With dead ends: 1458 [2022-07-21 04:35:19,904 INFO L226 Difference]: Without dead ends: 875 [2022-07-21 04:35:19,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:35:19,909 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 878 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 5144 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 5144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:19,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2880 Invalid, 5372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [228 Valid, 5144 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 04:35:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-07-21 04:35:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 599. [2022-07-21 04:35:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6623376623376624) internal successors, (768), 482 states have internal predecessors, (768), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-21 04:35:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 985 transitions. [2022-07-21 04:35:19,993 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 985 transitions. Word has length 68 [2022-07-21 04:35:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:19,993 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 985 transitions. [2022-07-21 04:35:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 985 transitions. [2022-07-21 04:35:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:35:19,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:19,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:19,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 04:35:19,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash -550225129, now seen corresponding path program 1 times [2022-07-21 04:35:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:19,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108449900] [2022-07-21 04:35:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:35:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:35:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:35:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:20,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108449900] [2022-07-21 04:35:20,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108449900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:20,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:20,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:35:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263112509] [2022-07-21 04:35:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:20,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:35:20,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:35:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:35:20,300 INFO L87 Difference]: Start difference. First operand 599 states and 985 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:35:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:24,431 INFO L93 Difference]: Finished difference Result 1449 states and 2457 transitions. [2022-07-21 04:35:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:35:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-21 04:35:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:24,445 INFO L225 Difference]: With dead ends: 1449 [2022-07-21 04:35:24,445 INFO L226 Difference]: Without dead ends: 835 [2022-07-21 04:35:24,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:35:24,456 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1433 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:24,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1794 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 04:35:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-21 04:35:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 575. [2022-07-21 04:35:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 441 states have (on average 1.653061224489796) internal successors, (729), 459 states have internal predecessors, (729), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 942 transitions. [2022-07-21 04:35:24,524 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 942 transitions. Word has length 68 [2022-07-21 04:35:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:24,526 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 942 transitions. [2022-07-21 04:35:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:35:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 942 transitions. [2022-07-21 04:35:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 04:35:24,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:24,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 04:35:24,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1908921867, now seen corresponding path program 1 times [2022-07-21 04:35:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:24,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704551238] [2022-07-21 04:35:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:24,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:35:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:35:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:35:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:24,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704551238] [2022-07-21 04:35:24,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704551238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:24,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:24,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811366985] [2022-07-21 04:35:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:24,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:24,896 INFO L87 Difference]: Start difference. First operand 575 states and 942 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:29,701 INFO L93 Difference]: Finished difference Result 1412 states and 2388 transitions. [2022-07-21 04:35:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-07-21 04:35:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:29,709 INFO L225 Difference]: With dead ends: 1412 [2022-07-21 04:35:29,709 INFO L226 Difference]: Without dead ends: 829 [2022-07-21 04:35:29,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:29,713 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 1477 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 4701 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:29,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 2837 Invalid, 5153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4701 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:35:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-21 04:35:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-07-21 04:35:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.645977011494253) internal successors, (716), 453 states have internal predecessors, (716), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 929 transitions. [2022-07-21 04:35:29,766 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 929 transitions. Word has length 69 [2022-07-21 04:35:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:29,766 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 929 transitions. [2022-07-21 04:35:29,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 929 transitions. [2022-07-21 04:35:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:35:29,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:29,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:35:29,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:29,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1120655615, now seen corresponding path program 1 times [2022-07-21 04:35:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:29,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660322207] [2022-07-21 04:35:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:35:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:35:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:35:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:30,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:30,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660322207] [2022-07-21 04:35:30,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660322207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:30,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:30,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78495935] [2022-07-21 04:35:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:30,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:30,122 INFO L87 Difference]: Start difference. First operand 569 states and 929 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:35,077 INFO L93 Difference]: Finished difference Result 1382 states and 2337 transitions. [2022-07-21 04:35:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:35,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-07-21 04:35:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:35,083 INFO L225 Difference]: With dead ends: 1382 [2022-07-21 04:35:35,084 INFO L226 Difference]: Without dead ends: 829 [2022-07-21 04:35:35,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:35,089 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 826 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 4815 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 5040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:35,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 2782 Invalid, 5040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4815 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 04:35:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-21 04:35:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-07-21 04:35:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.6436781609195403) internal successors, (715), 453 states have internal predecessors, (715), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 928 transitions. [2022-07-21 04:35:35,138 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 928 transitions. Word has length 70 [2022-07-21 04:35:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:35,139 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 928 transitions. [2022-07-21 04:35:35,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 928 transitions. [2022-07-21 04:35:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:35:35,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:35,141 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:35,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:35:35,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1841165080, now seen corresponding path program 1 times [2022-07-21 04:35:35,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:35,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180087519] [2022-07-21 04:35:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:35,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:35:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 04:35:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:35:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:35,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:35,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180087519] [2022-07-21 04:35:35,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180087519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:35,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:35,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640028652] [2022-07-21 04:35:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:35,461 INFO L87 Difference]: Start difference. First operand 569 states and 928 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:40,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:40,231 INFO L93 Difference]: Finished difference Result 1400 states and 2357 transitions. [2022-07-21 04:35:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-07-21 04:35:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:40,236 INFO L225 Difference]: With dead ends: 1400 [2022-07-21 04:35:40,236 INFO L226 Difference]: Without dead ends: 823 [2022-07-21 04:35:40,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:40,240 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 855 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 4812 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 5033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 4812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:40,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 2934 Invalid, 5033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 4812 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:35:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-07-21 04:35:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-07-21 04:35:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6363636363636365) internal successors, (702), 447 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 915 transitions. [2022-07-21 04:35:40,307 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 915 transitions. Word has length 71 [2022-07-21 04:35:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:40,307 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 915 transitions. [2022-07-21 04:35:40,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 915 transitions. [2022-07-21 04:35:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:35:40,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:40,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:35:40,309 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 745123459, now seen corresponding path program 1 times [2022-07-21 04:35:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89291922] [2022-07-21 04:35:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:35:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:35:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:35:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:40,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89291922] [2022-07-21 04:35:40,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89291922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:40,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:40,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254296440] [2022-07-21 04:35:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:40,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:40,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:40,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:40,608 INFO L87 Difference]: Start difference. First operand 563 states and 915 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:45,377 INFO L93 Difference]: Finished difference Result 1370 states and 2308 transitions. [2022-07-21 04:35:45,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:45,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-07-21 04:35:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:45,383 INFO L225 Difference]: With dead ends: 1370 [2022-07-21 04:35:45,383 INFO L226 Difference]: Without dead ends: 823 [2022-07-21 04:35:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:45,386 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 811 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 4701 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 4929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:45,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2807 Invalid, 4929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 4701 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:35:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-07-21 04:35:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-07-21 04:35:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.634032634032634) internal successors, (701), 447 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 914 transitions. [2022-07-21 04:35:45,455 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 914 transitions. Word has length 72 [2022-07-21 04:35:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:45,456 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 914 transitions. [2022-07-21 04:35:45,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 914 transitions. [2022-07-21 04:35:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:35:45,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:45,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:45,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:35:45,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -155039253, now seen corresponding path program 1 times [2022-07-21 04:35:45,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009118795] [2022-07-21 04:35:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:45,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:35:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:35:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009118795] [2022-07-21 04:35:45,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009118795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:45,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:45,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351166265] [2022-07-21 04:35:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:45,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:45,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:45,758 INFO L87 Difference]: Start difference. First operand 563 states and 914 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:50,393 INFO L93 Difference]: Finished difference Result 1391 states and 2330 transitions. [2022-07-21 04:35:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:35:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-21 04:35:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:50,398 INFO L225 Difference]: With dead ends: 1391 [2022-07-21 04:35:50,398 INFO L226 Difference]: Without dead ends: 844 [2022-07-21 04:35:50,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:35:50,401 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1400 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 4578 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 5033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 4578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:50,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2803 Invalid, 5033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 4578 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-07-21 04:35:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 568. [2022-07-21 04:35:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6267281105990783) internal successors, (706), 452 states have internal predecessors, (706), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 919 transitions. [2022-07-21 04:35:50,456 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 919 transitions. Word has length 73 [2022-07-21 04:35:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:50,456 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 919 transitions. [2022-07-21 04:35:50,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 919 transitions. [2022-07-21 04:35:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:35:50,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:50,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:50,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:35:50,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:50,459 INFO L85 PathProgramCache]: Analyzing trace with hash -954856244, now seen corresponding path program 1 times [2022-07-21 04:35:50,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:50,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390098706] [2022-07-21 04:35:50,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:50,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:35:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:35:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:50,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:50,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390098706] [2022-07-21 04:35:50,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390098706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:50,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:50,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066953867] [2022-07-21 04:35:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:50,779 INFO L87 Difference]: Start difference. First operand 568 states and 919 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:55,417 INFO L93 Difference]: Finished difference Result 1393 states and 2329 transitions. [2022-07-21 04:35:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:55,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-21 04:35:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:55,421 INFO L225 Difference]: With dead ends: 1393 [2022-07-21 04:35:55,421 INFO L226 Difference]: Without dead ends: 817 [2022-07-21 04:35:55,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:55,424 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1414 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 4573 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 4573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:55,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 2818 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 4573 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-07-21 04:35:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-07-21 04:35:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.624113475177305) internal successors, (687), 441 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:35:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 900 transitions. [2022-07-21 04:35:55,479 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 900 transitions. Word has length 73 [2022-07-21 04:35:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:55,480 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 900 transitions. [2022-07-21 04:35:55,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 900 transitions. [2022-07-21 04:35:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:35:55,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:55,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:55,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:35:55,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1686237128, now seen corresponding path program 1 times [2022-07-21 04:35:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:55,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664843561] [2022-07-21 04:35:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:35:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:35:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:35:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:55,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664843561] [2022-07-21 04:35:55,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664843561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:55,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:55,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:55,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029726209] [2022-07-21 04:35:55,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:55,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:55,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:55,781 INFO L87 Difference]: Start difference. First operand 557 states and 900 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:00,849 INFO L93 Difference]: Finished difference Result 1370 states and 2289 transitions. [2022-07-21 04:36:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:36:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-21 04:36:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:00,854 INFO L225 Difference]: With dead ends: 1370 [2022-07-21 04:36:00,854 INFO L226 Difference]: Without dead ends: 829 [2022-07-21 04:36:00,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:36:00,857 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 774 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 4643 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 4870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 4643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:00,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2776 Invalid, 4870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 4643 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 04:36:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-21 04:36:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 563. [2022-07-21 04:36:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6153846153846154) internal successors, (693), 447 states have internal predecessors, (693), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:36:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2022-07-21 04:36:00,913 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 74 [2022-07-21 04:36:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2022-07-21 04:36:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2022-07-21 04:36:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:36:00,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:00,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:00,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:36:00,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash -159130038, now seen corresponding path program 1 times [2022-07-21 04:36:00,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:00,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806583900] [2022-07-21 04:36:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:00,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:36:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:36:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:36:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:01,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806583900] [2022-07-21 04:36:01,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806583900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:01,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:01,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:36:01,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581722626] [2022-07-21 04:36:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:01,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:36:01,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:36:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:01,220 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:05,713 INFO L93 Difference]: Finished difference Result 1373 states and 2290 transitions. [2022-07-21 04:36:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:36:05,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-21 04:36:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:05,717 INFO L225 Difference]: With dead ends: 1373 [2022-07-21 04:36:05,717 INFO L226 Difference]: Without dead ends: 817 [2022-07-21 04:36:05,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:36:05,720 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1384 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 4473 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 4473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:05,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2737 Invalid, 4931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 4473 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 04:36:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-07-21 04:36:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-07-21 04:36:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.6217494089834514) internal successors, (686), 441 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:36:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 899 transitions. [2022-07-21 04:36:05,778 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 899 transitions. Word has length 74 [2022-07-21 04:36:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:05,778 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 899 transitions. [2022-07-21 04:36:05,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 899 transitions. [2022-07-21 04:36:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 04:36:05,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:05,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:05,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:36:05,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1851808175, now seen corresponding path program 1 times [2022-07-21 04:36:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:05,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829021042] [2022-07-21 04:36:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:05,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:36:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:06,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:06,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829021042] [2022-07-21 04:36:06,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829021042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:06,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:06,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439970325] [2022-07-21 04:36:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:06,137 INFO L87 Difference]: Start difference. First operand 557 states and 899 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 04:36:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:13,972 INFO L93 Difference]: Finished difference Result 2113 states and 3582 transitions. [2022-07-21 04:36:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:36:13,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-07-21 04:36:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:13,983 INFO L225 Difference]: With dead ends: 2113 [2022-07-21 04:36:13,984 INFO L226 Difference]: Without dead ends: 1574 [2022-07-21 04:36:13,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:36:13,987 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 3141 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 6444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:13,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3280 Valid, 2457 Invalid, 6444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1191 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-21 04:36:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-07-21 04:36:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1197. [2022-07-21 04:36:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 869 states have (on average 1.571921749136939) internal successors, (1366), 923 states have internal predecessors, (1366), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-07-21 04:36:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1986 transitions. [2022-07-21 04:36:14,161 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1986 transitions. Word has length 75 [2022-07-21 04:36:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:14,162 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1986 transitions. [2022-07-21 04:36:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 04:36:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1986 transitions. [2022-07-21 04:36:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 04:36:14,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:14,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:14,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:36:14,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -458912943, now seen corresponding path program 1 times [2022-07-21 04:36:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:14,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909226422] [2022-07-21 04:36:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:14,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:36:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 04:36:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909226422] [2022-07-21 04:36:14,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909226422] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:36:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401573786] [2022-07-21 04:36:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:14,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:36:14,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:36:14,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:36:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:36:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:14,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:36:14,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:36:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:36:14,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:36:14,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401573786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:14,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:36:14,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:36:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674381513] [2022-07-21 04:36:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:36:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:36:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:14,821 INFO L87 Difference]: Start difference. First operand 1197 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:15,150 INFO L93 Difference]: Finished difference Result 3463 states and 5820 transitions. [2022-07-21 04:36:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:36:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-21 04:36:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:15,167 INFO L225 Difference]: With dead ends: 3463 [2022-07-21 04:36:15,168 INFO L226 Difference]: Without dead ends: 2284 [2022-07-21 04:36:15,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:15,177 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 863 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:15,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1838 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:36:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-07-21 04:36:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2223. [2022-07-21 04:36:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1616 states have (on average 1.5866336633663367) internal successors, (2564), 1724 states have internal predecessors, (2564), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-07-21 04:36:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3731 transitions. [2022-07-21 04:36:15,518 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3731 transitions. Word has length 75 [2022-07-21 04:36:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:15,519 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3731 transitions. [2022-07-21 04:36:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3731 transitions. [2022-07-21 04:36:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 04:36:15,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:15,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:15,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:36:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 04:36:15,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1231115865, now seen corresponding path program 1 times [2022-07-21 04:36:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:15,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885366209] [2022-07-21 04:36:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:36:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 04:36:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885366209] [2022-07-21 04:36:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885366209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:36:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910903648] [2022-07-21 04:36:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:36:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:36:16,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:36:16,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:36:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:16,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:36:16,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:36:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:36:16,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:36:16,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910903648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:16,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:36:16,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:36:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432916727] [2022-07-21 04:36:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:16,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:36:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:36:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:16,397 INFO L87 Difference]: Start difference. First operand 2223 states and 3731 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:16,827 INFO L93 Difference]: Finished difference Result 5059 states and 8563 transitions. [2022-07-21 04:36:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:36:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-21 04:36:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:16,847 INFO L225 Difference]: With dead ends: 5059 [2022-07-21 04:36:16,847 INFO L226 Difference]: Without dead ends: 2854 [2022-07-21 04:36:16,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:16,860 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 861 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:16,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1774 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:36:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-07-21 04:36:17,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2655. [2022-07-21 04:36:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 1950 states have (on average 1.6) internal successors, (3120), 2075 states have internal predecessors, (3120), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-07-21 04:36:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 4447 transitions. [2022-07-21 04:36:17,234 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 4447 transitions. Word has length 76 [2022-07-21 04:36:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:17,234 INFO L495 AbstractCegarLoop]: Abstraction has 2655 states and 4447 transitions. [2022-07-21 04:36:17,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 4447 transitions. [2022-07-21 04:36:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 04:36:17,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:17,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:17,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 04:36:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 04:36:17,440 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1359357280, now seen corresponding path program 1 times [2022-07-21 04:36:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:17,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863736727] [2022-07-21 04:36:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:36:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:17,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863736727] [2022-07-21 04:36:17,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863736727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:17,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:17,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:17,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620980652] [2022-07-21 04:36:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:17,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:17,756 INFO L87 Difference]: Start difference. First operand 2655 states and 4447 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 04:36:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:28,780 INFO L93 Difference]: Finished difference Result 9769 states and 17343 transitions. [2022-07-21 04:36:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:36:28,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-07-21 04:36:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:28,832 INFO L225 Difference]: With dead ends: 9769 [2022-07-21 04:36:28,832 INFO L226 Difference]: Without dead ends: 7132 [2022-07-21 04:36:28,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:36:28,849 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 2419 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 6583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:28,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 2990 Invalid, 6583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [854 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-21 04:36:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2022-07-21 04:36:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 5867. [2022-07-21 04:36:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 4171 states have (on average 1.575161831695037) internal successors, (6570), 4516 states have internal predecessors, (6570), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2288), 1400 states have call predecessors, (2288), 1396 states have call successors, (2288) [2022-07-21 04:36:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 10260 transitions. [2022-07-21 04:36:29,780 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 10260 transitions. Word has length 78 [2022-07-21 04:36:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:29,780 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 10260 transitions. [2022-07-21 04:36:29,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 04:36:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 10260 transitions. [2022-07-21 04:36:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 04:36:29,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:29,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:36:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:36:29,782 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -599142051, now seen corresponding path program 1 times [2022-07-21 04:36:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:29,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237702031] [2022-07-21 04:36:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:36:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:30,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:30,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237702031] [2022-07-21 04:36:30,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237702031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:30,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:30,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:36:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401666997] [2022-07-21 04:36:30,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:36:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:36:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:36:30,051 INFO L87 Difference]: Start difference. First operand 5867 states and 10260 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 04:36:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:35,214 INFO L93 Difference]: Finished difference Result 12689 states and 22522 transitions. [2022-07-21 04:36:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:36:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-07-21 04:36:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:35,257 INFO L225 Difference]: With dead ends: 12689 [2022-07-21 04:36:35,257 INFO L226 Difference]: Without dead ends: 6840 [2022-07-21 04:36:35,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:35,280 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 770 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:35,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1936 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:36:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2022-07-21 04:36:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 5875. [2022-07-21 04:36:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 4177 states have (on average 1.5738568350490783) internal successors, (6574), 4522 states have internal predecessors, (6574), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2278), 1398 states have call predecessors, (2278), 1396 states have call successors, (2278) [2022-07-21 04:36:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 10254 transitions. [2022-07-21 04:36:36,270 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 10254 transitions. Word has length 79 [2022-07-21 04:36:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:36,271 INFO L495 AbstractCegarLoop]: Abstraction has 5875 states and 10254 transitions. [2022-07-21 04:36:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 04:36:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 10254 transitions. [2022-07-21 04:36:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 04:36:36,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:36,275 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:36,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:36:36,275 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 687934125, now seen corresponding path program 1 times [2022-07-21 04:36:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087365117] [2022-07-21 04:36:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:36:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:36:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087365117] [2022-07-21 04:36:36,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087365117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:36,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:36,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51267048] [2022-07-21 04:36:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:36,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:36,591 INFO L87 Difference]: Start difference. First operand 5875 states and 10254 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:36:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:47,352 INFO L93 Difference]: Finished difference Result 20164 states and 37621 transitions. [2022-07-21 04:36:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:36:47,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-07-21 04:36:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:47,445 INFO L225 Difference]: With dead ends: 20164 [2022-07-21 04:36:47,446 INFO L226 Difference]: Without dead ends: 14307 [2022-07-21 04:36:47,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:36:47,487 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 3505 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 1238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 6654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:47,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3642 Valid, 3037 Invalid, 6654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1238 Valid, 5416 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-21 04:36:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2022-07-21 04:36:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 11817. [2022-07-21 04:36:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 8355 states have (on average 1.5684021543985638) internal successors, (13104), 9053 states have internal predecessors, (13104), 2868 states have call successors, (2868), 434 states have call predecessors, (2868), 593 states have return successors, (5248), 2876 states have call predecessors, (5248), 2858 states have call successors, (5248) [2022-07-21 04:36:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 21220 transitions. [2022-07-21 04:36:49,313 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 21220 transitions. Word has length 87 [2022-07-21 04:36:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:49,313 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 21220 transitions. [2022-07-21 04:36:49,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:36:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 21220 transitions. [2022-07-21 04:36:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 04:36:49,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:49,315 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:36:49,316 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1924648248, now seen corresponding path program 1 times [2022-07-21 04:36:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706552796] [2022-07-21 04:36:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:36:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 04:36:49,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:49,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706552796] [2022-07-21 04:36:49,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706552796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:49,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:49,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:36:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925653051] [2022-07-21 04:36:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:49,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:36:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:36:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:36:49,561 INFO L87 Difference]: Start difference. First operand 11817 states and 21220 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:36:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:55,621 INFO L93 Difference]: Finished difference Result 25350 states and 46602 transitions. [2022-07-21 04:36:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:36:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-21 04:36:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:55,726 INFO L225 Difference]: With dead ends: 25350 [2022-07-21 04:36:55,727 INFO L226 Difference]: Without dead ends: 13551 [2022-07-21 04:36:55,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:55,968 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 777 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:55,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1949 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 04:36:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-07-21 04:36:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 11857. [2022-07-21 04:36:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 8391 states have (on average 1.5664402335836014) internal successors, (13144), 9081 states have internal predecessors, (13144), 2868 states have call successors, (2868), 450 states have call predecessors, (2868), 597 states have return successors, (5234), 2872 states have call predecessors, (5234), 2858 states have call successors, (5234) [2022-07-21 04:36:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 21246 transitions. [2022-07-21 04:36:57,750 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 21246 transitions. Word has length 88 [2022-07-21 04:36:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:57,750 INFO L495 AbstractCegarLoop]: Abstraction has 11857 states and 21246 transitions. [2022-07-21 04:36:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:36:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 21246 transitions. [2022-07-21 04:36:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:36:57,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:57,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:36:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:36:57,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash -18431621, now seen corresponding path program 1 times [2022-07-21 04:36:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593065317] [2022-07-21 04:36:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:36:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:36:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:36:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593065317] [2022-07-21 04:36:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593065317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:58,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:58,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967174299] [2022-07-21 04:36:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:58,046 INFO L87 Difference]: Start difference. First operand 11857 states and 21246 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:37:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:12,379 INFO L93 Difference]: Finished difference Result 40469 states and 80608 transitions. [2022-07-21 04:37:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:37:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-21 04:37:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:12,643 INFO L225 Difference]: With dead ends: 40469 [2022-07-21 04:37:12,644 INFO L226 Difference]: Without dead ends: 28630 [2022-07-21 04:37:12,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:37:12,746 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 2392 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 5727 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 5727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:12,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 3027 Invalid, 6557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 5727 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-07-21 04:37:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2022-07-21 04:37:16,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 23761. [2022-07-21 04:37:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 16806 states have (on average 1.5627751993335715) internal successors, (26264), 18187 states have internal predecessors, (26264), 5749 states have call successors, (5749), 894 states have call predecessors, (5749), 1205 states have return successors, (12190), 5778 states have call predecessors, (12190), 5731 states have call successors, (12190) [2022-07-21 04:37:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 44203 transitions. [2022-07-21 04:37:16,849 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 44203 transitions. Word has length 97 [2022-07-21 04:37:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:16,850 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 44203 transitions. [2022-07-21 04:37:16,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:37:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 44203 transitions. [2022-07-21 04:37:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:37:16,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:16,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:37:16,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:37:16,853 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash 689445490, now seen corresponding path program 1 times [2022-07-21 04:37:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:16,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532176670] [2022-07-21 04:37:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:16,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:37:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:37:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:37:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:37:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:37:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:37:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:37:17,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:17,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532176670] [2022-07-21 04:37:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532176670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:17,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:37:17,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:37:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884590602] [2022-07-21 04:37:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:17,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:37:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:37:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:37:17,146 INFO L87 Difference]: Start difference. First operand 23761 states and 44203 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:37:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:25,402 INFO L93 Difference]: Finished difference Result 50837 states and 98531 transitions. [2022-07-21 04:37:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:37:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-21 04:37:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:25,716 INFO L225 Difference]: With dead ends: 50837 [2022-07-21 04:37:25,717 INFO L226 Difference]: Without dead ends: 27094 [2022-07-21 04:37:25,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:37:25,845 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 779 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:25,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1939 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:37:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states. [2022-07-21 04:37:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27094 to 23841. [2022-07-21 04:37:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23841 states, 16878 states have (on average 1.5608484417585022) internal successors, (26344), 18259 states have internal predecessors, (26344), 5749 states have call successors, (5749), 910 states have call predecessors, (5749), 1213 states have return successors, (12174), 5770 states have call predecessors, (12174), 5731 states have call successors, (12174) [2022-07-21 04:37:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23841 states to 23841 states and 44267 transitions. [2022-07-21 04:37:29,483 INFO L78 Accepts]: Start accepts. Automaton has 23841 states and 44267 transitions. Word has length 98 [2022-07-21 04:37:29,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:29,483 INFO L495 AbstractCegarLoop]: Abstraction has 23841 states and 44267 transitions. [2022-07-21 04:37:29,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:37:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 23841 states and 44267 transitions. [2022-07-21 04:37:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 04:37:29,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:29,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-07-21 04:37:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:37:29,486 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1299400590, now seen corresponding path program 1 times [2022-07-21 04:37:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:29,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505986592] [2022-07-21 04:37:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:37:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:37:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:37:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:37:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:37:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:37:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:37:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:37:29,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505986592] [2022-07-21 04:37:29,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505986592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:29,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:37:29,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:37:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95118915] [2022-07-21 04:37:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:29,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:37:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:37:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:37:29,769 INFO L87 Difference]: Start difference. First operand 23841 states and 44267 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:37:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:48,161 INFO L93 Difference]: Finished difference Result 80374 states and 173003 transitions. [2022-07-21 04:37:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:37:48,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-21 04:37:48,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:48,816 INFO L225 Difference]: With dead ends: 80374 [2022-07-21 04:37:48,816 INFO L226 Difference]: Without dead ends: 56551 [2022-07-21 04:37:49,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:37:49,156 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 2330 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 6583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:49,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 3258 Invalid, 6583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 5769 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-07-21 04:37:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56551 states. [2022-07-21 04:37:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56551 to 47815. [2022-07-21 04:37:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47815 states, 33847 states have (on average 1.557597423700771) internal successors, (52720), 36611 states have internal predecessors, (52720), 11518 states have call successors, (11518), 1814 states have call predecessors, (11518), 2449 states have return successors, (29598), 11592 states have call predecessors, (29598), 11484 states have call successors, (29598) [2022-07-21 04:37:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47815 states to 47815 states and 93836 transitions. [2022-07-21 04:37:57,009 INFO L78 Accepts]: Start accepts. Automaton has 47815 states and 93836 transitions. Word has length 108 [2022-07-21 04:37:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 47815 states and 93836 transitions. [2022-07-21 04:37:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:37:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 47815 states and 93836 transitions. [2022-07-21 04:37:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 04:37:57,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:57,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-21 04:37:57,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:37:57,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2107145542, now seen corresponding path program 1 times [2022-07-21 04:37:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:57,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809971065] [2022-07-21 04:37:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:37:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:37:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:37:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:37:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:37:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:37:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:37:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:37:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 04:37:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:37:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809971065] [2022-07-21 04:37:57,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809971065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:37:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711424647] [2022-07-21 04:37:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:57,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:37:57,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:37:57,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:37:57,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:37:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:57,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:37:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:37:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:37:58,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:37:58,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711424647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:58,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:37:58,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 04:37:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762436664] [2022-07-21 04:37:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:58,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:37:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:37:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:37:58,022 INFO L87 Difference]: Start difference. First operand 47815 states and 93836 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:38:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:38:17,032 INFO L93 Difference]: Finished difference Result 140288 states and 289817 transitions. [2022-07-21 04:38:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:38:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2022-07-21 04:38:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:38:18,089 INFO L225 Difference]: With dead ends: 140288 [2022-07-21 04:38:18,089 INFO L226 Difference]: Without dead ends: 92491 [2022-07-21 04:38:18,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:38:18,634 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 2652 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 6946 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2822 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 7666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 6946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:38:18,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2822 Valid, 3558 Invalid, 7666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 6946 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:38:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92491 states.