./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_label48+token_ring.03.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 --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 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:28:03,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:28:04,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:28:04,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:28:04,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:28:04,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:28:04,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:28:04,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:28:04,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:28:04,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:28:04,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:28:04,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:28:04,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:28:04,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:28:04,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:28:04,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:28:04,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:28:04,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:28:04,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:28:04,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:28:04,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:28:04,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:28:04,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:28:04,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:28:04,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:28:04,066 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:28:04,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:28:04,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:28:04,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:28:04,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:28:04,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:28:04,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:28:04,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:28:04,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:28:04,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:28:04,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:28:04,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:28:04,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:28:04,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:28:04,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:28:04,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:28:04,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:28:04,072 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2024-11-22 03:28:04,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:28:04,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:28:04,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:28:04,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:28:04,372 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:28:04,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2024-11-22 03:28:05,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:28:06,625 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:28:06,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2024-11-22 03:28:06,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ef0d19d/d673d15a997f4f90b303e9538fb2e692/FLAG17c006d13 [2024-11-22 03:28:06,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ef0d19d/d673d15a997f4f90b303e9538fb2e692 [2024-11-22 03:28:06,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:28:06,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:28:06,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:28:06,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:28:06,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:28:06,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:28:06" (1/1) ... [2024-11-22 03:28:06,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@add82dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:06, skipping insertion in model container [2024-11-22 03:28:06,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:28:06" (1/1) ... [2024-11-22 03:28:06,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:28:08,549 WARN L250 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_label48+token_ring.03.cil-2.c[375709,375722] [2024-11-22 03:28:08,588 WARN L250 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_label48+token_ring.03.cil-2.c[383339,383352] [2024-11-22 03:28:08,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:28:08,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:28:09,588 WARN L250 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_label48+token_ring.03.cil-2.c[375709,375722] [2024-11-22 03:28:09,602 WARN L250 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_label48+token_ring.03.cil-2.c[383339,383352] [2024-11-22 03:28:09,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:28:09,688 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:28:09,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09 WrapperNode [2024-11-22 03:28:09,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:28:09,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:28:09,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:28:09,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:28:09,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:09,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,310 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-11-22 03:28:10,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:28:10,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:28:10,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:28:10,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:28:10,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,517 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 03:28:10,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:10,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:11,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:28:11,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:28:11,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:28:11,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:28:11,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (1/1) ... [2024-11-22 03:28:11,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:28:11,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:28:11,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 03:28:11,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 03:28:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:28:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-22 03:28:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-22 03:28:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 03:28:11,174 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 03:28:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-22 03:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-22 03:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-22 03:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-22 03:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-22 03:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-22 03:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-22 03:28:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-22 03:28:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:28:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:28:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:28:11,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:28:11,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:28:19,415 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-22 03:28:19,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:28:19,489 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:28:19,489 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-22 03:28:19,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:28:19 BoogieIcfgContainer [2024-11-22 03:28:19,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:28:19,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:28:19,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:28:19,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:28:19,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:28:06" (1/3) ... [2024-11-22 03:28:19,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0725a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:28:19, skipping insertion in model container [2024-11-22 03:28:19,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:09" (2/3) ... [2024-11-22 03:28:19,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0725a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:28:19, skipping insertion in model container [2024-11-22 03:28:19,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:28:19" (3/3) ... [2024-11-22 03:28:19,498 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.c [2024-11-22 03:28:19,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:28:19,514 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 03:28:19,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:28:19,651 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8e19254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:28:19,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 03:28:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 03:28:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:19,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:19,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:19,681 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:19,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2024-11-22 03:28:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83855181] [2024-11-22 03:28:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:20,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83855181] [2024-11-22 03:28:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83855181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 03:28:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327302408] [2024-11-22 03:28:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:20,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 03:28:20,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 03:28:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:28:20,248 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:20,795 INFO L93 Difference]: Finished difference Result 4837 states and 8901 transitions. [2024-11-22 03:28:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:28:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:20,829 INFO L225 Difference]: With dead ends: 4837 [2024-11-22 03:28:20,829 INFO L226 Difference]: Without dead ends: 2434 [2024-11-22 03:28:20,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:20,850 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4415 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 12703 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:20,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 12703 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 03:28:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-22 03:28:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2423. [2024-11-22 03:28:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-22 03:28:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4404 transitions. [2024-11-22 03:28:21,086 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4404 transitions. Word has length 79 [2024-11-22 03:28:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:21,087 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4404 transitions. [2024-11-22 03:28:21,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4404 transitions. [2024-11-22 03:28:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:21,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:21,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:21,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:28:21,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:21,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2024-11-22 03:28:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:21,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161003151] [2024-11-22 03:28:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:21,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:21,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161003151] [2024-11-22 03:28:21,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161003151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:21,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:21,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240495883] [2024-11-22 03:28:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:21,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:21,383 INFO L87 Difference]: Start difference. First operand 2423 states and 4404 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:21,943 INFO L93 Difference]: Finished difference Result 2894 states and 5109 transitions. [2024-11-22 03:28:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:21,960 INFO L225 Difference]: With dead ends: 2894 [2024-11-22 03:28:21,960 INFO L226 Difference]: Without dead ends: 2603 [2024-11-22 03:28:21,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:21,965 INFO L432 NwaCegarLoop]: 4250 mSDtfsCounter, 4340 mSDsluCounter, 12729 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:21,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 16979 Invalid, 511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2024-11-22 03:28:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2560. [2024-11-22 03:28:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-22 03:28:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4604 transitions. [2024-11-22 03:28:22,036 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4604 transitions. Word has length 79 [2024-11-22 03:28:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:22,037 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4604 transitions. [2024-11-22 03:28:22,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4604 transitions. [2024-11-22 03:28:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:22,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:22,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:22,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:28:22,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:22,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:22,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2024-11-22 03:28:22,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:22,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692002458] [2024-11-22 03:28:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692002458] [2024-11-22 03:28:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692002458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199732339] [2024-11-22 03:28:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:22,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:22,184 INFO L87 Difference]: Start difference. First operand 2560 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:22,703 INFO L93 Difference]: Finished difference Result 3321 states and 5740 transitions. [2024-11-22 03:28:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:22,718 INFO L225 Difference]: With dead ends: 3321 [2024-11-22 03:28:22,718 INFO L226 Difference]: Without dead ends: 2893 [2024-11-22 03:28:22,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:22,722 INFO L432 NwaCegarLoop]: 4246 mSDtfsCounter, 4335 mSDsluCounter, 12717 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 16963 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:22,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 16963 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2024-11-22 03:28:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2847. [2024-11-22 03:28:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2744 states have (on average 1.779518950437318) internal successors, (4883), 2752 states have internal predecessors, (4883), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-22 03:28:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 5029 transitions. [2024-11-22 03:28:22,817 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 5029 transitions. Word has length 79 [2024-11-22 03:28:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:22,818 INFO L471 AbstractCegarLoop]: Abstraction has 2847 states and 5029 transitions. [2024-11-22 03:28:22,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 5029 transitions. [2024-11-22 03:28:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:22,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:22,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:22,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 03:28:22,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:22,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2024-11-22 03:28:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772994835] [2024-11-22 03:28:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772994835] [2024-11-22 03:28:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772994835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484389422] [2024-11-22 03:28:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:22,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:22,968 INFO L87 Difference]: Start difference. First operand 2847 states and 5029 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:23,492 INFO L93 Difference]: Finished difference Result 4222 states and 7099 transitions. [2024-11-22 03:28:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:23,510 INFO L225 Difference]: With dead ends: 4222 [2024-11-22 03:28:23,511 INFO L226 Difference]: Without dead ends: 3507 [2024-11-22 03:28:23,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:23,516 INFO L432 NwaCegarLoop]: 4243 mSDtfsCounter, 4330 mSDsluCounter, 12708 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:23,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16951 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2024-11-22 03:28:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3454. [2024-11-22 03:28:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3265 states have (on average 1.7332312404287902) internal successors, (5659), 3287 states have internal predecessors, (5659), 113 states have call successors, (113), 54 states have call predecessors, (113), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-22 03:28:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5949 transitions. [2024-11-22 03:28:23,657 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5949 transitions. Word has length 79 [2024-11-22 03:28:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:23,657 INFO L471 AbstractCegarLoop]: Abstraction has 3454 states and 5949 transitions. [2024-11-22 03:28:23,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5949 transitions. [2024-11-22 03:28:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:23,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:23,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:23,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:28:23,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:23,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2024-11-22 03:28:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92559486] [2024-11-22 03:28:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92559486] [2024-11-22 03:28:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92559486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:23,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296753617] [2024-11-22 03:28:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:23,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:23,798 INFO L87 Difference]: Start difference. First operand 3454 states and 5949 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:24,431 INFO L93 Difference]: Finished difference Result 6345 states and 10390 transitions. [2024-11-22 03:28:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:24,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:24,456 INFO L225 Difference]: With dead ends: 6345 [2024-11-22 03:28:24,456 INFO L226 Difference]: Without dead ends: 5023 [2024-11-22 03:28:24,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:24,462 INFO L432 NwaCegarLoop]: 4238 mSDtfsCounter, 4429 mSDsluCounter, 12688 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 16926 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:24,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 16926 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2024-11-22 03:28:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 4725. [2024-11-22 03:28:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4354 states have (on average 1.676389526871842) internal successors, (7299), 4422 states have internal predecessors, (7299), 201 states have call successors, (201), 102 states have call predecessors, (201), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-22 03:28:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7957 transitions. [2024-11-22 03:28:24,666 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7957 transitions. Word has length 79 [2024-11-22 03:28:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:24,666 INFO L471 AbstractCegarLoop]: Abstraction has 4725 states and 7957 transitions. [2024-11-22 03:28:24,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7957 transitions. [2024-11-22 03:28:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:24,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:24,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:24,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 03:28:24,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:24,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2024-11-22 03:28:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934874540] [2024-11-22 03:28:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:24,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934874540] [2024-11-22 03:28:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934874540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861125262] [2024-11-22 03:28:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:24,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:24,789 INFO L87 Difference]: Start difference. First operand 4725 states and 7957 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:25,474 INFO L93 Difference]: Finished difference Result 10448 states and 17168 transitions. [2024-11-22 03:28:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:25,532 INFO L225 Difference]: With dead ends: 10448 [2024-11-22 03:28:25,533 INFO L226 Difference]: Without dead ends: 7855 [2024-11-22 03:28:25,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:25,552 INFO L432 NwaCegarLoop]: 4234 mSDtfsCounter, 4342 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 16910 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:25,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 16910 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2024-11-22 03:28:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7352. [2024-11-22 03:28:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 6571 states have (on average 1.6196925886470857) internal successors, (10643), 6785 states have internal predecessors, (10643), 369 states have call successors, (369), 198 states have call predecessors, (369), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-22 03:28:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 12405 transitions. [2024-11-22 03:28:26,112 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 12405 transitions. Word has length 79 [2024-11-22 03:28:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:26,112 INFO L471 AbstractCegarLoop]: Abstraction has 7352 states and 12405 transitions. [2024-11-22 03:28:26,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 12405 transitions. [2024-11-22 03:28:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:26,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:26,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:26,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:28:26,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:26,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2024-11-22 03:28:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015698386] [2024-11-22 03:28:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015698386] [2024-11-22 03:28:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015698386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:26,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:28:26,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996774857] [2024-11-22 03:28:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:26,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:28:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:28:26,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:26,229 INFO L87 Difference]: Start difference. First operand 7352 states and 12405 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:27,399 INFO L93 Difference]: Finished difference Result 18357 states and 31658 transitions. [2024-11-22 03:28:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:28:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:27,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:27,501 INFO L225 Difference]: With dead ends: 18357 [2024-11-22 03:28:27,502 INFO L226 Difference]: Without dead ends: 13137 [2024-11-22 03:28:27,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:28:27,533 INFO L432 NwaCegarLoop]: 4228 mSDtfsCounter, 4326 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 16888 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:27,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16888 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:28:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13137 states. [2024-11-22 03:28:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 12800. [2024-11-22 03:28:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12800 states, 11053 states have (on average 1.5605717904641274) internal successors, (17249), 11721 states have internal predecessors, (17249), 689 states have call successors, (689), 390 states have call predecessors, (689), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-22 03:28:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12800 states to 12800 states and 22723 transitions. [2024-11-22 03:28:28,489 INFO L78 Accepts]: Start accepts. Automaton has 12800 states and 22723 transitions. Word has length 79 [2024-11-22 03:28:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:28,492 INFO L471 AbstractCegarLoop]: Abstraction has 12800 states and 22723 transitions. [2024-11-22 03:28:28,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12800 states and 22723 transitions. [2024-11-22 03:28:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 03:28:28,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:28,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:28,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:28:28,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:28,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2024-11-22 03:28:28,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:28,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282573591] [2024-11-22 03:28:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:28,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:28:28,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282573591] [2024-11-22 03:28:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282573591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:28,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:28:28,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:28:28,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051222488] [2024-11-22 03:28:28,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:28,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:28:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:28:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:28:28,578 INFO L87 Difference]: Start difference. First operand 12800 states and 22723 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:29,433 INFO L93 Difference]: Finished difference Result 29247 states and 51750 transitions. [2024-11-22 03:28:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:28:29,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-22 03:28:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:29,539 INFO L225 Difference]: With dead ends: 29247 [2024-11-22 03:28:29,540 INFO L226 Difference]: Without dead ends: 18580 [2024-11-22 03:28:29,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:28:29,592 INFO L432 NwaCegarLoop]: 4379 mSDtfsCounter, 4346 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 8695 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:28:29,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 8695 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:28:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18580 states. [2024-11-22 03:28:30,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18580 to 17737. [2024-11-22 03:28:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 15215 states have (on average 1.524745317121262) internal successors, (23199), 16128 states have internal predecessors, (23199), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-22 03:28:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 30396 transitions. [2024-11-22 03:28:30,900 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 30396 transitions. Word has length 79 [2024-11-22 03:28:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:30,901 INFO L471 AbstractCegarLoop]: Abstraction has 17737 states and 30396 transitions. [2024-11-22 03:28:30,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:28:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 30396 transitions. [2024-11-22 03:28:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 03:28:30,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:30,972 INFO L215 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, 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] [2024-11-22 03:28:30,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 03:28:30,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2024-11-22 03:28:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028267225] [2024-11-22 03:28:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:28:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028267225] [2024-11-22 03:28:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028267225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:28:31,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433400853] [2024-11-22 03:28:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:31,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:31,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:28:31,078 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) [2024-11-22 03:28:31,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:28:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:31,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:28:31,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:28:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 03:28:31,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:28:31,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433400853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:31,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:28:31,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:28:31,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862096184] [2024-11-22 03:28:31,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:31,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:28:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:28:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:31,308 INFO L87 Difference]: Start difference. First operand 17737 states and 30396 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:28:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:32,882 INFO L93 Difference]: Finished difference Result 48598 states and 83088 transitions. [2024-11-22 03:28:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:28:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-22 03:28:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:33,094 INFO L225 Difference]: With dead ends: 48598 [2024-11-22 03:28:33,094 INFO L226 Difference]: Without dead ends: 32994 [2024-11-22 03:28:33,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:33,171 INFO L432 NwaCegarLoop]: 4183 mSDtfsCounter, 4139 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4384 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 [2024-11-22 03:28:33,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:28:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32994 states. [2024-11-22 03:28:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32994 to 32796. [2024-11-22 03:28:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32796 states, 27808 states have (on average 1.4974108170310703) internal successors, (41640), 29632 states have internal predecessors, (41640), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-22 03:28:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 55863 transitions. [2024-11-22 03:28:35,575 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 55863 transitions. Word has length 129 [2024-11-22 03:28:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:35,579 INFO L471 AbstractCegarLoop]: Abstraction has 32796 states and 55863 transitions. [2024-11-22 03:28:35,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:28:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 55863 transitions. [2024-11-22 03:28:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 03:28:35,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:35,651 INFO L215 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, 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] [2024-11-22 03:28:35,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:28:35,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:35,857 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2024-11-22 03:28:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718882748] [2024-11-22 03:28:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:28:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718882748] [2024-11-22 03:28:35,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718882748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:28:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793754842] [2024-11-22 03:28:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:35,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:28:35,944 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) [2024-11-22 03:28:35,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:28:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:36,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:28:36,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:28:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 03:28:36,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:28:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793754842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:28:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:28:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266893522] [2024-11-22 03:28:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:28:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:28:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:36,133 INFO L87 Difference]: Start difference. First operand 32796 states and 55863 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:28:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:38,983 INFO L93 Difference]: Finished difference Result 93429 states and 159357 transitions. [2024-11-22 03:28:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:28:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-22 03:28:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:39,319 INFO L225 Difference]: With dead ends: 93429 [2024-11-22 03:28:39,319 INFO L226 Difference]: Without dead ends: 62766 [2024-11-22 03:28:39,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:39,428 INFO L432 NwaCegarLoop]: 4183 mSDtfsCounter, 4133 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4384 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 [2024-11-22 03:28:39,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:28:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62766 states. [2024-11-22 03:28:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62766 to 62372. [2024-11-22 03:28:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62372 states, 52502 states have (on average 1.4806293093596434) internal successors, (77736), 56148 states have internal predecessors, (77736), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-22 03:28:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62372 states to 62372 states and 105911 transitions. [2024-11-22 03:28:43,888 INFO L78 Accepts]: Start accepts. Automaton has 62372 states and 105911 transitions. Word has length 129 [2024-11-22 03:28:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:43,889 INFO L471 AbstractCegarLoop]: Abstraction has 62372 states and 105911 transitions. [2024-11-22 03:28:43,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:28:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 62372 states and 105911 transitions. [2024-11-22 03:28:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 03:28:43,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:43,991 INFO L215 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, 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] [2024-11-22 03:28:44,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:28:44,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 03:28:44,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:44,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 467842687, now seen corresponding path program 1 times [2024-11-22 03:28:44,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521672070] [2024-11-22 03:28:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:28:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:44,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521672070] [2024-11-22 03:28:44,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521672070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:28:44,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044892261] [2024-11-22 03:28:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:44,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:28:44,293 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) [2024-11-22 03:28:44,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:28:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:44,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:28:44,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:28:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 03:28:44,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:28:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044892261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:28:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:28:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466904000] [2024-11-22 03:28:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:44,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:28:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:28:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:44,457 INFO L87 Difference]: Start difference. First operand 62372 states and 105911 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 03:28:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:28:49,561 INFO L93 Difference]: Finished difference Result 180617 states and 309261 transitions. [2024-11-22 03:28:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:28:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2024-11-22 03:28:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:28:50,434 INFO L225 Difference]: With dead ends: 180617 [2024-11-22 03:28:50,435 INFO L226 Difference]: Without dead ends: 120379 [2024-11-22 03:28:50,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:50,702 INFO L432 NwaCegarLoop]: 4388 mSDtfsCounter, 197 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8570 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 [2024-11-22 03:28:50,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8570 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:28:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120379 states. [2024-11-22 03:28:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120379 to 120379. [2024-11-22 03:28:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120379 states, 100906 states have (on average 1.468961211424494) internal successors, (148227), 108065 states have internal predecessors, (148227), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 11728 states have return successors, (49462), 7737 states have call predecessors, (49462), 7743 states have call successors, (49462) [2024-11-22 03:28:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120379 states to 120379 states and 205432 transitions. [2024-11-22 03:28:58,335 INFO L78 Accepts]: Start accepts. Automaton has 120379 states and 205432 transitions. Word has length 129 [2024-11-22 03:28:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:28:58,336 INFO L471 AbstractCegarLoop]: Abstraction has 120379 states and 205432 transitions. [2024-11-22 03:28:58,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 03:28:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 120379 states and 205432 transitions. [2024-11-22 03:28:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-22 03:28:58,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:28:58,696 INFO L215 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:28:58,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 03:28:58,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:58,897 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:28:58,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:28:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1721282092, now seen corresponding path program 1 times [2024-11-22 03:28:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:28:58,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696652282] [2024-11-22 03:28:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:28:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 03:28:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:28:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696652282] [2024-11-22 03:28:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696652282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:28:58,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456811491] [2024-11-22 03:28:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:28:58,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:28:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:28:58,994 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) [2024-11-22 03:28:58,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:28:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:28:59,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:28:59,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:28:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 03:28:59,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:28:59,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456811491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:28:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:28:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:28:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587411647] [2024-11-22 03:28:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:28:59,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:28:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:28:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:28:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:28:59,262 INFO L87 Difference]: Start difference. First operand 120379 states and 205432 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)