./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/combinations/Problem05_label42+token_ring.07.cil-2.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 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:13:10,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:13:10,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:13:10,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:13:10,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:13:10,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:13:10,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:13:10,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:13:10,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:13:10,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:13:10,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:13:10,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:13:10,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:13:10,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:13:10,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:13:10,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:13:10,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:13:10,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:13:10,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:13:10,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:13:10,466 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:13:10,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:13:10,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:13:10,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:13:10,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:13:10,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:13:10,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:13:10,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:13:10,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:13:10,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:13:10,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:13:10,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:13:10,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:13:10,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:13:10,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:13:10,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:13:10,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:13:10,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:13:10,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:13:10,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:13:10,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:13:10,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:13:10,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:13:10,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:13:10,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:13:10,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:13:10,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:13:10,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:13:10,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:13:10,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:13:10,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:13:10,520 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:13:10,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:13:10,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:13:10,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:13:10,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:13:10,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:13:10,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:13:10,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:13:10,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:13:10,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:13:10,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:13:10,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:13:10,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:13:10,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:13:10,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:13:10,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:13:10,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:13:10,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:13:10,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:13:10,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:13:10,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:13:10,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:13:10,525 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:13:10,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:13:10,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:13:10,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 [2022-07-12 08:13:10,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:13:10,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:13:10,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:13:10,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:13:10,758 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:13:10,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-07-12 08:13:10,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f0e6386/657e7524859b4b40883b52c54979b2e8/FLAG8be778b12 [2022-07-12 08:13:11,439 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:13:11,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2022-07-12 08:13:11,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f0e6386/657e7524859b4b40883b52c54979b2e8/FLAG8be778b12 [2022-07-12 08:13:11,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1f0e6386/657e7524859b4b40883b52c54979b2e8 [2022-07-12 08:13:11,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:13:11,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:13:11,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:13:11,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:13:11,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:13:11,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:13:11" (1/1) ... [2022-07-12 08:13:11,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@858f422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:11, skipping insertion in model container [2022-07-12 08:13:11,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:13:11" (1/1) ... [2022-07-12 08:13:11,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:13:11,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:13:13,003 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/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2022-07-12 08:13:13,023 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/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2022-07-12 08:13:13,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:13:13,183 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:13:13,862 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/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2022-07-12 08:13:13,866 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/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2022-07-12 08:13:13,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:13:13,928 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:13:13,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13 WrapperNode [2022-07-12 08:13:13,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:13:13,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:13:13,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:13:13,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:13:13,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,279 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-07-12 08:13:14,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:13:14,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:13:14,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:13:14,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:13:14,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:13:14,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:13:14,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:13:14,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:13:14,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (1/1) ... [2022-07-12 08:13:14,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:13:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:14,890 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) [2022-07-12 08:13:14,915 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 [2022-07-12 08:13:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:13:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:13:14,929 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:13:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:13:14,929 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:13:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:13:14,930 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:13:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:13:14,930 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:13:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:13:14,930 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:13:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:13:14,930 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:13:14,930 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:13:14,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:13:14,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:13:14,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:13:14,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:13:15,035 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:13:15,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:13:19,747 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:13:19,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:13:19,774 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-12 08:13:19,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:13:19 BoogieIcfgContainer [2022-07-12 08:13:19,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:13:19,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:13:19,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:13:19,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:13:19,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:13:11" (1/3) ... [2022-07-12 08:13:19,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7a3684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:13:19, skipping insertion in model container [2022-07-12 08:13:19,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:13" (2/3) ... [2022-07-12 08:13:19,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7a3684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:13:19, skipping insertion in model container [2022-07-12 08:13:19,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:13:19" (3/3) ... [2022-07-12 08:13:19,783 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-2.c [2022-07-12 08:13:19,791 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:13:19,792 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:13:19,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:13:19,854 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@ee28497, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4641940 [2022-07-12 08:13:19,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:13:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-12 08:13:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:19,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:19,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:19,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-07-12 08:13:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:19,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947291412] [2022-07-12 08:13:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:20,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:20,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947291412] [2022-07-12 08:13:20,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947291412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:20,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:20,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:13:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697154866] [2022-07-12 08:13:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:13:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:13:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:13:20,212 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:21,147 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-07-12 08:13:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:13:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:21,173 INFO L225 Difference]: With dead ends: 4970 [2022-07-12 08:13:21,173 INFO L226 Difference]: Without dead ends: 2467 [2022-07-12 08:13:21,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:21,187 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:21,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 16818 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:13:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-07-12 08:13:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-07-12 08:13:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-12 08:13:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-07-12 08:13:21,275 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-07-12 08:13:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:21,275 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-07-12 08:13:21,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-07-12 08:13:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:21,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:21,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:13:21,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-07-12 08:13:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:21,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049133744] [2022-07-12 08:13:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:21,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049133744] [2022-07-12 08:13:21,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049133744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:21,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:21,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:13:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613991612] [2022-07-12 08:13:21,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:21,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:13:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:13:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:13:21,464 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:22,950 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-07-12 08:13:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:13:22,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:22,960 INFO L225 Difference]: With dead ends: 3050 [2022-07-12 08:13:22,960 INFO L226 Difference]: Without dead ends: 2806 [2022-07-12 08:13:22,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:13:22,962 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16969 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:22,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16969 Invalid, 1393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 08:13:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-12 08:13:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-07-12 08:13:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-12 08:13:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-07-12 08:13:23,013 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-07-12 08:13:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:23,014 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-07-12 08:13:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-07-12 08:13:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:23,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:23,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:23,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:13:23,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-07-12 08:13:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:23,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900899644] [2022-07-12 08:13:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900899644] [2022-07-12 08:13:23,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900899644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:23,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:23,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720691201] [2022-07-12 08:13:23,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:23,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:23,129 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:24,881 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-07-12 08:13:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:13:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:24,915 INFO L225 Difference]: With dead ends: 3648 [2022-07-12 08:13:24,915 INFO L226 Difference]: Without dead ends: 3153 [2022-07-12 08:13:24,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:13:24,926 INFO L413 NwaCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21778 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21778 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:13:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-07-12 08:13:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-07-12 08:13:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-12 08:13:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-07-12 08:13:25,011 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-07-12 08:13:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:25,011 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-07-12 08:13:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-07-12 08:13:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:25,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:25,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:13:25,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-07-12 08:13:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:25,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412789112] [2022-07-12 08:13:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:25,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412789112] [2022-07-12 08:13:25,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412789112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:25,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:25,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080591156] [2022-07-12 08:13:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:25,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:25,121 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:27,104 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-07-12 08:13:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:13:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:27,123 INFO L225 Difference]: With dead ends: 4529 [2022-07-12 08:13:27,125 INFO L226 Difference]: Without dead ends: 3800 [2022-07-12 08:13:27,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:13:27,140 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:27,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4969 Valid, 21770 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 08:13:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-07-12 08:13:27,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-07-12 08:13:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-12 08:13:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-07-12 08:13:27,267 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-07-12 08:13:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-07-12 08:13:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-07-12 08:13:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:27,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:27,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:13:27,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-07-12 08:13:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126988649] [2022-07-12 08:13:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:27,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126988649] [2022-07-12 08:13:27,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126988649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:27,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:27,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:27,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582686993] [2022-07-12 08:13:27,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:27,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:27,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:27,420 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:29,236 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-07-12 08:13:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:13:29,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:29,259 INFO L225 Difference]: With dead ends: 6226 [2022-07-12 08:13:29,260 INFO L226 Difference]: Without dead ends: 5028 [2022-07-12 08:13:29,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:13:29,265 INFO L413 NwaCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:29,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 21766 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:13:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-12 08:13:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-07-12 08:13:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-12 08:13:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-07-12 08:13:29,415 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-07-12 08:13:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:29,415 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-07-12 08:13:29,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-07-12 08:13:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:29,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:29,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:13:29,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-07-12 08:13:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:29,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668269925] [2022-07-12 08:13:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:29,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:29,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668269925] [2022-07-12 08:13:29,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668269925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:29,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:29,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226657172] [2022-07-12 08:13:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:29,534 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:31,500 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-07-12 08:13:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:13:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:31,533 INFO L225 Difference]: With dead ends: 9619 [2022-07-12 08:13:31,533 INFO L226 Difference]: Without dead ends: 7482 [2022-07-12 08:13:31,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:13:31,548 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21762 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:31,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 21762 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:13:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-07-12 08:13:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-07-12 08:13:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-12 08:13:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-07-12 08:13:31,751 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-07-12 08:13:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:31,751 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-07-12 08:13:31,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-07-12 08:13:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:31,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:31,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:31,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:13:31,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:31,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-07-12 08:13:31,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:31,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360822382] [2022-07-12 08:13:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:31,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:31,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360822382] [2022-07-12 08:13:31,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360822382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:31,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:31,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076176891] [2022-07-12 08:13:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:31,850 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:33,832 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-07-12 08:13:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:13:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:33,877 INFO L225 Difference]: With dead ends: 16404 [2022-07-12 08:13:33,877 INFO L226 Difference]: Without dead ends: 12384 [2022-07-12 08:13:33,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:13:33,892 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21756 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:33,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21756 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 08:13:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-07-12 08:13:34,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-07-12 08:13:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-12 08:13:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-07-12 08:13:34,256 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-07-12 08:13:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:34,257 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-07-12 08:13:34,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-07-12 08:13:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:34,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:34,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:13:34,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-07-12 08:13:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:34,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640473270] [2022-07-12 08:13:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:34,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:34,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:34,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640473270] [2022-07-12 08:13:34,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640473270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:34,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:34,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676173828] [2022-07-12 08:13:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:34,379 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:35,479 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-07-12 08:13:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:13:35,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:35,514 INFO L225 Difference]: With dead ends: 20276 [2022-07-12 08:13:35,514 INFO L226 Difference]: Without dead ends: 12477 [2022-07-12 08:13:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:13:35,534 INFO L413 NwaCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16745 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:35,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16745 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:13:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-07-12 08:13:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-07-12 08:13:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-12 08:13:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-07-12 08:13:35,890 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-07-12 08:13:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:35,891 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-07-12 08:13:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-07-12 08:13:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:35,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:35,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:35,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:13:35,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:35,899 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-07-12 08:13:35,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:35,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709783444] [2022-07-12 08:13:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:35,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709783444] [2022-07-12 08:13:35,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709783444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:35,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:35,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804268452] [2022-07-12 08:13:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:35,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:35,995 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:38,932 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-07-12 08:13:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:13:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:39,045 INFO L225 Difference]: With dead ends: 33332 [2022-07-12 08:13:39,045 INFO L226 Difference]: Without dead ends: 25533 [2022-07-12 08:13:39,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:13:39,161 INFO L413 NwaCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21732 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:39,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 21732 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 08:13:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-07-12 08:13:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-07-12 08:13:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-12 08:13:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-07-12 08:13:40,010 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-07-12 08:13:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:40,010 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-07-12 08:13:40,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-07-12 08:13:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:40,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:40,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:13:40,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-07-12 08:13:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:40,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666212984] [2022-07-12 08:13:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:40,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666212984] [2022-07-12 08:13:40,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666212984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446899841] [2022-07-12 08:13:40,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:40,114 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:44,531 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-07-12 08:13:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:13:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:44,725 INFO L225 Difference]: With dead ends: 62843 [2022-07-12 08:13:44,725 INFO L226 Difference]: Without dead ends: 47487 [2022-07-12 08:13:44,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:13:44,770 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:44,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 21831 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 08:13:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-07-12 08:13:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-07-12 08:13:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-12 08:13:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-07-12 08:13:46,526 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-07-12 08:13:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:46,526 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-07-12 08:13:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-07-12 08:13:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:46,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:46,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:46,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:13:46,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:46,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-07-12 08:13:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:46,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668924782] [2022-07-12 08:13:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668924782] [2022-07-12 08:13:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668924782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:46,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647868473] [2022-07-12 08:13:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:46,630 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:53,849 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-07-12 08:13:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:13:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:13:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:54,277 INFO L225 Difference]: With dead ends: 118758 [2022-07-12 08:13:54,278 INFO L226 Difference]: Without dead ends: 88965 [2022-07-12 08:13:54,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:13:54,391 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:54,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 21722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 08:13:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-07-12 08:13:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-07-12 08:13:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-12 08:13:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-07-12 08:13:57,982 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-07-12 08:13:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:57,983 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-07-12 08:13:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-07-12 08:13:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:13:58,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:58,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:13:58,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-07-12 08:13:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:58,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427770537] [2022-07-12 08:13:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:13:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:13:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:13:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:13:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427770537] [2022-07-12 08:13:58,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427770537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:58,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:58,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:13:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473923437] [2022-07-12 08:13:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:13:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:13:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:13:58,106 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:11,666 INFO L93 Difference]: Finished difference Result 230013 states and 379509 transitions. [2022-07-12 08:14:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:14:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-12 08:14:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:12,490 INFO L225 Difference]: With dead ends: 230013 [2022-07-12 08:14:12,490 INFO L226 Difference]: Without dead ends: 170771 [2022-07-12 08:14:12,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:14:12,637 INFO L413 NwaCegarLoop]: 4578 mSDtfsCounter, 5105 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:12,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 21717 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 08:14:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170771 states. [2022-07-12 08:14:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170771 to 120147. [2022-07-12 08:14:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120147 states, 109364 states have (on average 1.5496781390585568) internal successors, (169479), 109879 states have internal predecessors, (169479), 7191 states have call successors, (7191), 3079 states have call predecessors, (7191), 3590 states have return successors, (27384), 7700 states have call predecessors, (27384), 7189 states have call successors, (27384) [2022-07-12 08:14:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120147 states to 120147 states and 204054 transitions. [2022-07-12 08:14:20,274 INFO L78 Accepts]: Start accepts. Automaton has 120147 states and 204054 transitions. Word has length 124 [2022-07-12 08:14:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:20,275 INFO L495 AbstractCegarLoop]: Abstraction has 120147 states and 204054 transitions. [2022-07-12 08:14:20,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 120147 states and 204054 transitions. [2022-07-12 08:14:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 08:14:20,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:20,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:20,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:14:20,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2022-07-12 08:14:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:20,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813900330] [2022-07-12 08:14:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 08:14:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 08:14:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 08:14:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 08:14:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:20,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813900330] [2022-07-12 08:14:20,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813900330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:20,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:20,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604446371] [2022-07-12 08:14:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:20,626 INFO L87 Difference]: Start difference. First operand 120147 states and 204054 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)