./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.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_label46+token_ring.02.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 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:22:04,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:22:04,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:22:04,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:22:04,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:22:04,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:22:04,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:22:04,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:22:04,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:22:04,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:22:04,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:22:04,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:22:04,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:22:04,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:22:04,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:22:04,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:22:04,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:22:04,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:22:04,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:22:04,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:22:04,517 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:22:04,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:22:04,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:22:04,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:22:04,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:22:04,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:22:04,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:22:04,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:22:04,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:22:04,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:22:04,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:22:04,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:22:04,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:22:04,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:22:04,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:22:04,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:22:04,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:22:04,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:22:04,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:22:04,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:22:04,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:22:04,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:22:04,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:22:04,557 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:22:04,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:22:04,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:22:04,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:22:04,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:22:04,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:22:04,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:22:04,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:22:04,561 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:22:04,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:22:04,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:22:04,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:22:04,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:22:04,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:22:04,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:22:04,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:22:04,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:04,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:22:04,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:22:04,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:22:04,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:22:04,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:22:04,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:22:04,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 [2022-07-12 08:22:04,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:22:04,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:22:04,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:22:04,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:22:04,774 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:22:04,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2022-07-12 08:22:04,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeec632d/092437aa96f64e6bb028d6c701617b00/FLAG322adf8f5 [2022-07-12 08:22:05,474 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:22:05,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2022-07-12 08:22:05,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeec632d/092437aa96f64e6bb028d6c701617b00/FLAG322adf8f5 [2022-07-12 08:22:05,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aeec632d/092437aa96f64e6bb028d6c701617b00 [2022-07-12 08:22:05,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:22:05,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:22:05,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:05,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:22:05,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:22:05,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:05" (1/1) ... [2022-07-12 08:22:05,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c478a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:05, skipping insertion in model container [2022-07-12 08:22:05,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:05" (1/1) ... [2022-07-12 08:22:05,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:22:05,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:22:06,872 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_label46+token_ring.02.cil-2.c[382357,382370] [2022-07-12 08:22:06,890 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_label46+token_ring.02.cil-2.c[383339,383352] [2022-07-12 08:22:07,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:07,011 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:22:07,623 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_label46+token_ring.02.cil-2.c[382357,382370] [2022-07-12 08:22:07,626 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_label46+token_ring.02.cil-2.c[383339,383352] [2022-07-12 08:22:07,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:07,677 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:22:07,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07 WrapperNode [2022-07-12 08:22:07,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:07,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:07,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:22:07,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:22:07,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:07,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:07,972 INFO L137 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12624 [2022-07-12 08:22:07,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:07,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:22:07,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:22:07,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:22:07,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:07,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:22:08,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:22:08,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:22:08,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:22:08,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (1/1) ... [2022-07-12 08:22:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:08,449 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 08:22:08,508 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 08:22:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:22:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:22:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:22:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:22:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:22:08,669 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:22:08,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:22:13,351 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:22:13,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:22:13,372 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 08:22:13,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:13 BoogieIcfgContainer [2022-07-12 08:22:13,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:22:13,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:22:13,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:22:13,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:22:13,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:22:05" (1/3) ... [2022-07-12 08:22:13,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4b1783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:13, skipping insertion in model container [2022-07-12 08:22:13,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:07" (2/3) ... [2022-07-12 08:22:13,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4b1783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:13, skipping insertion in model container [2022-07-12 08:22:13,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:13" (3/3) ... [2022-07-12 08:22:13,380 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-2.c [2022-07-12 08:22:13,389 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:22:13,389 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:22:13,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:22:13,480 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@4af9db62, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59aa4f84 [2022-07-12 08:22:13,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:22:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-12 08:22:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:13,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:13,499 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] [2022-07-12 08:22:13,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2062992276, now seen corresponding path program 1 times [2022-07-12 08:22:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714311789] [2022-07-12 08:22:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:13,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:13,775 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 08:22:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:13,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714311789] [2022-07-12 08:22:13,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714311789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:13,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:13,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:22:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417501360] [2022-07-12 08:22:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:13,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:22:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:22:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:22:13,811 INFO L87 Difference]: Start difference. First operand has 2323 states, 2295 states have (on average 1.857516339869281) internal successors, (4263), 2300 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 08:22:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:14,491 INFO L93 Difference]: Finished difference Result 4824 states and 8887 transitions. [2022-07-12 08:22:14,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:22:14,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:14,509 INFO L225 Difference]: With dead ends: 4824 [2022-07-12 08:22:14,510 INFO L226 Difference]: Without dead ends: 2441 [2022-07-12 08:22:14,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:22:14,519 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 4444 mSDsluCounter, 12443 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:14,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4453 Valid, 16692 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 08:22:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2022-07-12 08:22:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2376. [2022-07-12 08:22:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2332 states have (on average 1.8340480274442539) internal successors, (4277), 2336 states have internal predecessors, (4277), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-12 08:22:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 4336 transitions. [2022-07-12 08:22:14,617 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 4336 transitions. Word has length 69 [2022-07-12 08:22:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 4336 transitions. [2022-07-12 08:22:14,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 08:22:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 4336 transitions. [2022-07-12 08:22:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:14,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:14,621 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] [2022-07-12 08:22:14,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:22:14,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:14,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1960277912, now seen corresponding path program 1 times [2022-07-12 08:22:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:14,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343536881] [2022-07-12 08:22:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:14,717 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 08:22:14,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:14,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343536881] [2022-07-12 08:22:14,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343536881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:14,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:14,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:14,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266345969] [2022-07-12 08:22:14,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:14,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:14,720 INFO L87 Difference]: Start difference. First operand 2376 states and 4336 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:15,509 INFO L93 Difference]: Finished difference Result 2838 states and 5030 transitions. [2022-07-12 08:22:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:15,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:15,519 INFO L225 Difference]: With dead ends: 2838 [2022-07-12 08:22:15,520 INFO L226 Difference]: Without dead ends: 2593 [2022-07-12 08:22:15,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:15,523 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4365 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20780 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:15,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20780 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:22:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-07-12 08:22:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2490. [2022-07-12 08:22:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2428 states have (on average 1.82001647446458) internal successors, (4419), 2433 states have internal predecessors, (4419), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-12 08:22:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4502 transitions. [2022-07-12 08:22:15,579 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4502 transitions. Word has length 69 [2022-07-12 08:22:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:15,580 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4502 transitions. [2022-07-12 08:22:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4502 transitions. [2022-07-12 08:22:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:15,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:15,582 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] [2022-07-12 08:22:15,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:22:15,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -573492502, now seen corresponding path program 1 times [2022-07-12 08:22:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:15,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514973402] [2022-07-12 08:22:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:15,649 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 08:22:15,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:15,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514973402] [2022-07-12 08:22:15,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514973402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:15,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:15,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:15,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603533161] [2022-07-12 08:22:15,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:15,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:15,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:15,657 INFO L87 Difference]: Start difference. First operand 2490 states and 4502 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:16,362 INFO L93 Difference]: Finished difference Result 3239 states and 5624 transitions. [2022-07-12 08:22:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:16,372 INFO L225 Difference]: With dead ends: 3239 [2022-07-12 08:22:16,372 INFO L226 Difference]: Without dead ends: 2880 [2022-07-12 08:22:16,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:16,375 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4399 mSDsluCounter, 16296 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4408 SdHoareTripleChecker+Valid, 20477 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:16,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4408 Valid, 20477 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:22:16,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-07-12 08:22:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2719. [2022-07-12 08:22:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2621 states have (on average 1.794734834032812) internal successors, (4704), 2628 states have internal predecessors, (4704), 62 states have call successors, (62), 31 states have call predecessors, (62), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-12 08:22:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4839 transitions. [2022-07-12 08:22:16,427 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4839 transitions. Word has length 69 [2022-07-12 08:22:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:16,428 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 4839 transitions. [2022-07-12 08:22:16,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4839 transitions. [2022-07-12 08:22:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:16,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:16,429 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] [2022-07-12 08:22:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:22:16,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash 302526504, now seen corresponding path program 1 times [2022-07-12 08:22:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:16,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556793892] [2022-07-12 08:22:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:16,510 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 08:22:16,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556793892] [2022-07-12 08:22:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556793892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:16,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254199940] [2022-07-12 08:22:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:16,514 INFO L87 Difference]: Start difference. First operand 2719 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:17,213 INFO L93 Difference]: Finished difference Result 4113 states and 6915 transitions. [2022-07-12 08:22:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:17,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:17,229 INFO L225 Difference]: With dead ends: 4113 [2022-07-12 08:22:17,231 INFO L226 Difference]: Without dead ends: 3525 [2022-07-12 08:22:17,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:17,244 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 4371 mSDsluCounter, 16499 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 20778 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:17,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 20778 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:22:17,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2022-07-12 08:22:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3131. [2022-07-12 08:22:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2965 states have (on average 1.7551433389544688) internal successors, (5204), 2976 states have internal predecessors, (5204), 102 states have call successors, (102), 55 states have call predecessors, (102), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-12 08:22:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5441 transitions. [2022-07-12 08:22:17,346 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5441 transitions. Word has length 69 [2022-07-12 08:22:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:17,350 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5441 transitions. [2022-07-12 08:22:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5441 transitions. [2022-07-12 08:22:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:17,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:17,352 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] [2022-07-12 08:22:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:22:17,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1840866534, now seen corresponding path program 1 times [2022-07-12 08:22:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:17,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595350211] [2022-07-12 08:22:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:17,420 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 08:22:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595350211] [2022-07-12 08:22:17,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595350211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:17,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:17,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323594811] [2022-07-12 08:22:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:17,422 INFO L87 Difference]: Start difference. First operand 3131 states and 5441 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:18,076 INFO L93 Difference]: Finished difference Result 5511 states and 8955 transitions. [2022-07-12 08:22:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:18,092 INFO L225 Difference]: With dead ends: 5511 [2022-07-12 08:22:18,093 INFO L226 Difference]: Without dead ends: 4511 [2022-07-12 08:22:18,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:18,100 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4376 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20750 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:18,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20750 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 08:22:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2022-07-12 08:22:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3988. [2022-07-12 08:22:18,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3690 states have (on average 1.7002710027100272) internal successors, (6274), 3709 states have internal predecessors, (6274), 178 states have call successors, (178), 103 states have call predecessors, (178), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-12 08:22:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6725 transitions. [2022-07-12 08:22:18,207 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6725 transitions. Word has length 69 [2022-07-12 08:22:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:18,207 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 6725 transitions. [2022-07-12 08:22:18,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 08:22:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6725 transitions. [2022-07-12 08:22:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 08:22:18,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:18,210 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] [2022-07-12 08:22:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:22:18,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -187719576, now seen corresponding path program 1 times [2022-07-12 08:22:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:18,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712174814] [2022-07-12 08:22:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:18,352 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 08:22:18,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:18,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712174814] [2022-07-12 08:22:18,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712174814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:18,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:18,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:22:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734419572] [2022-07-12 08:22:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:22:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:22:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:22:18,355 INFO L87 Difference]: Start difference. First operand 3988 states and 6725 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 08:22:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:18,946 INFO L93 Difference]: Finished difference Result 7372 states and 11760 transitions. [2022-07-12 08:22:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:22:18,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 69 [2022-07-12 08:22:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:18,963 INFO L225 Difference]: With dead ends: 7372 [2022-07-12 08:22:18,963 INFO L226 Difference]: Without dead ends: 5516 [2022-07-12 08:22:18,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:22:18,968 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4499 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 16581 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:18,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4524 Valid, 16581 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 08:22:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2022-07-12 08:22:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 4929. [2022-07-12 08:22:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4473 states have (on average 1.6492287055667338) internal successors, (7377), 4509 states have internal predecessors, (7377), 274 states have call successors, (274), 157 states have call predecessors, (274), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-12 08:22:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 8048 transitions. [2022-07-12 08:22:19,089 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 8048 transitions. Word has length 69 [2022-07-12 08:22:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:19,089 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 8048 transitions. [2022-07-12 08:22:19,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 08:22:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 8048 transitions. [2022-07-12 08:22:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 08:22:19,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:19,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:19,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:22:19,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash 770021099, now seen corresponding path program 1 times [2022-07-12 08:22:19,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526183897] [2022-07-12 08:22:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 08:22:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:22:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526183897] [2022-07-12 08:22:19,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526183897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:19,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905507131] [2022-07-12 08:22:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:19,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:19,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:19,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:22:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 08:22:19,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:19,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905507131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:19,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:19,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:22:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112173606] [2022-07-12 08:22:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:19,303 INFO L87 Difference]: Start difference. First operand 4929 states and 8048 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:22:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:19,446 INFO L93 Difference]: Finished difference Result 10380 states and 16066 transitions. [2022-07-12 08:22:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-07-12 08:22:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:19,474 INFO L225 Difference]: With dead ends: 10380 [2022-07-12 08:22:19,475 INFO L226 Difference]: Without dead ends: 7583 [2022-07-12 08:22:19,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:19,485 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 4110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:19,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 4333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-12 08:22:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7527. [2022-07-12 08:22:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 6657 states have (on average 1.5841970857743728) internal successors, (10546), 6726 states have internal predecessors, (10546), 512 states have call successors, (512), 309 states have call predecessors, (512), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-12 08:22:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11803 transitions. [2022-07-12 08:22:19,694 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11803 transitions. Word has length 111 [2022-07-12 08:22:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:19,694 INFO L495 AbstractCegarLoop]: Abstraction has 7527 states and 11803 transitions. [2022-07-12 08:22:19,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:22:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11803 transitions. [2022-07-12 08:22:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 08:22:19,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:19,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:19,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:19,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -122535733, now seen corresponding path program 1 times [2022-07-12 08:22:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:19,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672484655] [2022-07-12 08:22:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 08:22:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:22:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:20,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672484655] [2022-07-12 08:22:20,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672484655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:20,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934697718] [2022-07-12 08:22:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:20,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:20,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:20,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:22:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:20,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:20,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 08:22:20,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:20,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934697718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:20,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:20,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:20,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568521431] [2022-07-12 08:22:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:20,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:20,173 INFO L87 Difference]: Start difference. First operand 7527 states and 11803 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 08:22:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:20,501 INFO L93 Difference]: Finished difference Result 17935 states and 27159 transitions. [2022-07-12 08:22:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-07-12 08:22:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:20,545 INFO L225 Difference]: With dead ends: 17935 [2022-07-12 08:22:20,546 INFO L226 Difference]: Without dead ends: 12541 [2022-07-12 08:22:20,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:20,565 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 154 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:20,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8461 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2022-07-12 08:22:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2022-07-12 08:22:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 10858 states have (on average 1.5209983422361393) internal successors, (16515), 10976 states have internal predecessors, (16515), 977 states have call successors, (977), 609 states have call predecessors, (977), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-12 08:22:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 19088 transitions. [2022-07-12 08:22:21,056 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 19088 transitions. Word has length 111 [2022-07-12 08:22:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:21,057 INFO L495 AbstractCegarLoop]: Abstraction has 12541 states and 19088 transitions. [2022-07-12 08:22:21,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 08:22:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 19088 transitions. [2022-07-12 08:22:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 08:22:21,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:21,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:21,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 08:22:21,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:21,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash 327119452, now seen corresponding path program 1 times [2022-07-12 08:22:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:21,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49940332] [2022-07-12 08:22:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 08:22:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 08:22:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-12 08:22:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49940332] [2022-07-12 08:22:21,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49940332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985875940] [2022-07-12 08:22:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:21,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:21,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:21,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 08:22:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:21,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:21,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 08:22:21,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:21,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985875940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:21,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:21,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:22:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650881895] [2022-07-12 08:22:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:21,589 INFO L87 Difference]: Start difference. First operand 12541 states and 19088 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 08:22:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:22,133 INFO L93 Difference]: Finished difference Result 32917 states and 49009 transitions. [2022-07-12 08:22:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 143 [2022-07-12 08:22:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:22,207 INFO L225 Difference]: With dead ends: 32917 [2022-07-12 08:22:22,207 INFO L226 Difference]: Without dead ends: 22513 [2022-07-12 08:22:22,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:22,248 INFO L413 NwaCegarLoop]: 4183 mSDtfsCounter, 4068 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 4354 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22513 states. [2022-07-12 08:22:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22513 to 22301. [2022-07-12 08:22:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22301 states, 19038 states have (on average 1.4810904506775922) internal successors, (28197), 19270 states have internal predecessors, (28197), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-12 08:22:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22301 states to 22301 states and 33106 transitions. [2022-07-12 08:22:23,058 INFO L78 Accepts]: Start accepts. Automaton has 22301 states and 33106 transitions. Word has length 143 [2022-07-12 08:22:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:23,059 INFO L495 AbstractCegarLoop]: Abstraction has 22301 states and 33106 transitions. [2022-07-12 08:22:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 08:22:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22301 states and 33106 transitions. [2022-07-12 08:22:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 08:22:23,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:23,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:23,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:23,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 382011958, now seen corresponding path program 1 times [2022-07-12 08:22:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:23,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010678576] [2022-07-12 08:22:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 08:22:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 08:22:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 08:22:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 08:22:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-12 08:22:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:23,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010678576] [2022-07-12 08:22:23,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010678576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:23,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496261421] [2022-07-12 08:22:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:23,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:23,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:23,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:23,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 08:22:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:23,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 08:22:23,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:23,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496261421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:23,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:23,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:23,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880921861] [2022-07-12 08:22:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:23,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:23,550 INFO L87 Difference]: Start difference. First operand 22301 states and 33106 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 08:22:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:24,196 INFO L93 Difference]: Finished difference Result 44821 states and 66508 transitions. [2022-07-12 08:22:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-12 08:22:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:24,278 INFO L225 Difference]: With dead ends: 44821 [2022-07-12 08:22:24,278 INFO L226 Difference]: Without dead ends: 24655 [2022-07-12 08:22:24,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:24,318 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4087 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:24,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2022-07-12 08:22:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 24655. [2022-07-12 08:22:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24655 states, 21180 states have (on average 1.4241265344664777) internal successors, (30163), 21412 states have internal predecessors, (30163), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-12 08:22:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24655 states to 24655 states and 35194 transitions. [2022-07-12 08:22:25,060 INFO L78 Accepts]: Start accepts. Automaton has 24655 states and 35194 transitions. Word has length 160 [2022-07-12 08:22:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:25,060 INFO L495 AbstractCegarLoop]: Abstraction has 24655 states and 35194 transitions. [2022-07-12 08:22:25,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 08:22:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 24655 states and 35194 transitions. [2022-07-12 08:22:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 08:22:25,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:25,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:25,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:25,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 228383827, now seen corresponding path program 1 times [2022-07-12 08:22:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:25,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174982158] [2022-07-12 08:22:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 08:22:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 08:22:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 08:22:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 08:22:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 08:22:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:25,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174982158] [2022-07-12 08:22:25,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174982158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:25,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814119106] [2022-07-12 08:22:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:25,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:25,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:25,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:25,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 08:22:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:25,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 08:22:25,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 08:22:25,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:25,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814119106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:25,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:25,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163194262] [2022-07-12 08:22:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:25,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:25,541 INFO L87 Difference]: Start difference. First operand 24655 states and 35194 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:26,388 INFO L93 Difference]: Finished difference Result 41688 states and 58732 transitions. [2022-07-12 08:22:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-12 08:22:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:26,473 INFO L225 Difference]: With dead ends: 41688 [2022-07-12 08:22:26,473 INFO L226 Difference]: Without dead ends: 26195 [2022-07-12 08:22:26,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:26,510 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 4088 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:26,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4349 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26195 states. [2022-07-12 08:22:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26195 to 26055. [2022-07-12 08:22:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26055 states, 22468 states have (on average 1.3989229125867901) internal successors, (31431), 22700 states have internal predecessors, (31431), 1945 states have call successors, (1945), 1449 states have call predecessors, (1945), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-12 08:22:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26055 states to 26055 states and 36594 transitions. [2022-07-12 08:22:27,444 INFO L78 Accepts]: Start accepts. Automaton has 26055 states and 36594 transitions. Word has length 160 [2022-07-12 08:22:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:27,444 INFO L495 AbstractCegarLoop]: Abstraction has 26055 states and 36594 transitions. [2022-07-12 08:22:27,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 26055 states and 36594 transitions. [2022-07-12 08:22:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:27,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:27,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:27,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:27,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 08:22:27,699 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1570525413, now seen corresponding path program 1 times [2022-07-12 08:22:27,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834081512] [2022-07-12 08:22:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:27,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 08:22:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 08:22:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 08:22:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:27,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834081512] [2022-07-12 08:22:27,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834081512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:27,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48902103] [2022-07-12 08:22:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:27,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:27,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 08:22:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:27,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:27,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 08:22:27,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:27,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48902103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:27,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:27,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413066410] [2022-07-12 08:22:27,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:27,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:27,902 INFO L87 Difference]: Start difference. First operand 26055 states and 36594 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 08:22:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:29,168 INFO L93 Difference]: Finished difference Result 72665 states and 101108 transitions. [2022-07-12 08:22:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-12 08:22:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:29,349 INFO L225 Difference]: With dead ends: 72665 [2022-07-12 08:22:29,350 INFO L226 Difference]: Without dead ends: 48749 [2022-07-12 08:22:29,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:29,412 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 163 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 8467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:29,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 8467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48749 states. [2022-07-12 08:22:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48749 to 48705. [2022-07-12 08:22:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48705 states, 41704 states have (on average 1.3657442931133703) internal successors, (56957), 42166 states have internal predecessors, (56957), 3775 states have call successors, (3775), 2841 states have call predecessors, (3775), 3224 states have return successors, (7134), 3761 states have call predecessors, (7134), 3773 states have call successors, (7134) [2022-07-12 08:22:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48705 states to 48705 states and 67866 transitions. [2022-07-12 08:22:31,241 INFO L78 Accepts]: Start accepts. Automaton has 48705 states and 67866 transitions. Word has length 161 [2022-07-12 08:22:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:31,242 INFO L495 AbstractCegarLoop]: Abstraction has 48705 states and 67866 transitions. [2022-07-12 08:22:31,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 08:22:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 48705 states and 67866 transitions. [2022-07-12 08:22:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:31,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:31,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:31,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:31,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:31,762 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash -948353227, now seen corresponding path program 1 times [2022-07-12 08:22:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:31,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824274269] [2022-07-12 08:22:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 08:22:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 08:22:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 08:22:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:31,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824274269] [2022-07-12 08:22:31,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824274269] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:31,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705421171] [2022-07-12 08:22:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:31,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:31,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:31,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 08:22:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:31,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 08:22:32,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:32,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705421171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:32,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:32,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839780969] [2022-07-12 08:22:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:32,047 INFO L87 Difference]: Start difference. First operand 48705 states and 67866 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 08:22:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:33,523 INFO L93 Difference]: Finished difference Result 79069 states and 111521 transitions. [2022-07-12 08:22:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 161 [2022-07-12 08:22:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:33,659 INFO L225 Difference]: With dead ends: 79069 [2022-07-12 08:22:33,659 INFO L226 Difference]: Without dead ends: 41521 [2022-07-12 08:22:33,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:33,750 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4082 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41521 states. [2022-07-12 08:22:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41521 to 30305. [2022-07-12 08:22:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30305 states, 26128 states have (on average 1.3429654011022658) internal successors, (35089), 26370 states have internal predecessors, (35089), 2255 states have call successors, (2255), 1729 states have call predecessors, (2255), 1920 states have return successors, (3778), 2237 states have call predecessors, (3778), 2253 states have call successors, (3778) [2022-07-12 08:22:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30305 states to 30305 states and 41122 transitions. [2022-07-12 08:22:35,149 INFO L78 Accepts]: Start accepts. Automaton has 30305 states and 41122 transitions. Word has length 161 [2022-07-12 08:22:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:35,150 INFO L495 AbstractCegarLoop]: Abstraction has 30305 states and 41122 transitions. [2022-07-12 08:22:35,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 08:22:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 30305 states and 41122 transitions. [2022-07-12 08:22:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:35,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:35,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:35,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 08:22:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:35,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:35,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash -192882952, now seen corresponding path program 1 times [2022-07-12 08:22:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:35,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839118355] [2022-07-12 08:22:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 08:22:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 08:22:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 08:22:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-12 08:22:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839118355] [2022-07-12 08:22:35,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839118355] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:35,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256550096] [2022-07-12 08:22:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:35,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:35,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:35,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:35,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 08:22:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:35,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:35,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 08:22:35,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:35,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256550096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:35,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:35,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:35,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643807987] [2022-07-12 08:22:35,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:35,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:35,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:35,629 INFO L87 Difference]: Start difference. First operand 30305 states and 41122 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 08:22:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:37,636 INFO L93 Difference]: Finished difference Result 82213 states and 110894 transitions. [2022-07-12 08:22:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:37,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2022-07-12 08:22:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:37,817 INFO L225 Difference]: With dead ends: 82213 [2022-07-12 08:22:37,817 INFO L226 Difference]: Without dead ends: 54057 [2022-07-12 08:22:37,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:37,873 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 150 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:37,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 8458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54057 states. [2022-07-12 08:22:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54057 to 54053. [2022-07-12 08:22:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3125974363415902) internal successors, (60621), 46666 states have internal predecessors, (60621), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-12 08:22:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 73088 transitions. [2022-07-12 08:22:40,192 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 73088 transitions. Word has length 161 [2022-07-12 08:22:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:40,193 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 73088 transitions. [2022-07-12 08:22:40,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 08:22:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 73088 transitions. [2022-07-12 08:22:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:40,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:40,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:40,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 08:22:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 08:22:40,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1491732838, now seen corresponding path program 1 times [2022-07-12 08:22:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:40,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160843540] [2022-07-12 08:22:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 08:22:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 08:22:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 08:22:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 08:22:40,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160843540] [2022-07-12 08:22:40,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160843540] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539842891] [2022-07-12 08:22:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:40,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:40,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:40,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 08:22:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 08:22:40,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 08:22:40,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:40,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539842891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:40,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:40,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744095543] [2022-07-12 08:22:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:40,715 INFO L87 Difference]: Start difference. First operand 54053 states and 73088 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:42,614 INFO L93 Difference]: Finished difference Result 95015 states and 127828 transitions. [2022-07-12 08:22:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-12 08:22:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:42,787 INFO L225 Difference]: With dead ends: 95015 [2022-07-12 08:22:42,787 INFO L226 Difference]: Without dead ends: 54897 [2022-07-12 08:22:42,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:42,858 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4357 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:42,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4357 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54897 states. [2022-07-12 08:22:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54897 to 54053. [2022-07-12 08:22:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54053 states, 46184 states have (on average 1.3048025290143772) internal successors, (60261), 46666 states have internal predecessors, (60261), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-12 08:22:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 72728 transitions. [2022-07-12 08:22:45,286 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 72728 transitions. Word has length 161 [2022-07-12 08:22:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:45,287 INFO L495 AbstractCegarLoop]: Abstraction has 54053 states and 72728 transitions. [2022-07-12 08:22:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 72728 transitions. [2022-07-12 08:22:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:45,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:45,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:45,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 08:22:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 08:22:45,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -251057197, now seen corresponding path program 1 times [2022-07-12 08:22:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333930680] [2022-07-12 08:22:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 08:22:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 08:22:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 08:22:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 08:22:45,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:45,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333930680] [2022-07-12 08:22:45,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333930680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:45,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291379827] [2022-07-12 08:22:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:45,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:45,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:45,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:22:45,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 08:22:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 08:22:45,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 08:22:45,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:45,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291379827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:45,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:45,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 08:22:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618743833] [2022-07-12 08:22:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:45,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:45,792 INFO L87 Difference]: Start difference. First operand 54053 states and 72728 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:47,842 INFO L93 Difference]: Finished difference Result 94725 states and 126938 transitions. [2022-07-12 08:22:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:22:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2022-07-12 08:22:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:48,098 INFO L225 Difference]: With dead ends: 94725 [2022-07-12 08:22:48,098 INFO L226 Difference]: Without dead ends: 55449 [2022-07-12 08:22:48,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:48,152 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 4107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:48,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 4373 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:22:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55449 states. [2022-07-12 08:22:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55449 to 53933. [2022-07-12 08:22:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53933 states, 46064 states have (on average 1.2977813476901703) internal successors, (59781), 46546 states have internal predecessors, (59781), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2022-07-12 08:22:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53933 states to 53933 states and 72248 transitions. [2022-07-12 08:22:50,515 INFO L78 Accepts]: Start accepts. Automaton has 53933 states and 72248 transitions. Word has length 161 [2022-07-12 08:22:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:50,515 INFO L495 AbstractCegarLoop]: Abstraction has 53933 states and 72248 transitions. [2022-07-12 08:22:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 08:22:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 53933 states and 72248 transitions. [2022-07-12 08:22:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 08:22:50,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:50,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:50,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-12 08:22:50,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 08:22:50,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2084105626, now seen corresponding path program 1 times [2022-07-12 08:22:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:50,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807838388] [2022-07-12 08:22:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 08:22:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:22:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 08:22:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 08:22:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 08:22:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 08:22:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 08:22:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 08:22:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-12 08:22:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:50,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807838388] [2022-07-12 08:22:50,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807838388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:50,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:50,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:22:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6964020] [2022-07-12 08:22:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:22:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:22:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:22:50,857 INFO L87 Difference]: Start difference. First operand 53933 states and 72248 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 08:22:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:53,053 INFO L93 Difference]: Finished difference Result 103313 states and 136251 transitions. [2022-07-12 08:22:53,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:22:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 161 [2022-07-12 08:22:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:53,307 INFO L225 Difference]: With dead ends: 103313 [2022-07-12 08:22:53,308 INFO L226 Difference]: Without dead ends: 51525 [2022-07-12 08:22:53,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:53,372 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 296 mSDsluCounter, 12019 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 16167 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:53,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 16167 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 08:22:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51525 states.