./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.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 5055f39b9198ec38ad0f2881791eb80b1e4ab6fc763077f931bae502928055b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 23:27:11,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 23:27:11,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 23:27:11,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 23:27:11,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 23:27:11,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 23:27:11,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 23:27:11,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 23:27:11,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 23:27:11,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 23:27:11,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 23:27:11,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 23:27:11,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 23:27:11,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 23:27:11,512 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 23:27:11,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 23:27:11,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 23:27:11,513 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 23:27:11,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 23:27:11,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 23:27:11,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 23:27:11,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 23:27:11,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 23:27:11,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 23:27:11,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 23:27:11,515 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 23:27:11,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 23:27:11,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 23:27:11,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 23:27:11,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 23:27:11,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 23:27:11,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 23:27:11,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:27:11,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 23:27:11,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 23:27:11,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 23:27:11,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 23:27:11,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 23:27:11,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 23:27:11,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 23:27:11,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 23:27:11,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 23:27:11,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5055f39b9198ec38ad0f2881791eb80b1e4ab6fc763077f931bae502928055b4 [2024-11-19 23:27:11,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 23:27:11,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 23:27:11,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 23:27:11,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 23:27:11,788 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 23:27:11,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c [2024-11-19 23:27:13,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 23:27:13,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 23:27:13,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-1.c [2024-11-19 23:27:13,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fce43f209/a5dfc4c9a66a4050bc155b652658a5e6/FLAGda27c5d75 [2024-11-19 23:27:13,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fce43f209/a5dfc4c9a66a4050bc155b652658a5e6 [2024-11-19 23:27:13,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 23:27:13,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 23:27:13,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 23:27:13,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 23:27:13,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 23:27:13,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:27:13" (1/1) ... [2024-11-19 23:27:13,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f7e122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:13, skipping insertion in model container [2024-11-19 23:27:13,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:27:13" (1/1) ... [2024-11-19 23:27:14,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 23:27:15,604 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_label46+token_ring.03.cil-1.c[382357,382370] [2024-11-19 23:27:15,631 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_label46+token_ring.03.cil-1.c[383339,383352] [2024-11-19 23:27:15,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:27:15,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 23:27:16,616 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_label46+token_ring.03.cil-1.c[382357,382370] [2024-11-19 23:27:16,619 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_label46+token_ring.03.cil-1.c[383339,383352] [2024-11-19 23:27:16,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:27:16,690 INFO L204 MainTranslator]: Completed translation [2024-11-19 23:27:16,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16 WrapperNode [2024-11-19 23:27:16,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 23:27:16,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 23:27:16,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 23:27:16,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 23:27:16,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:16,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,105 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2024-11-19 23:27:17,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 23:27:17,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 23:27:17,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 23:27:17,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 23:27:17,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,262 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]. [2024-11-19 23:27:17,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 23:27:17,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 23:27:17,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 23:27:17,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 23:27:17,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (1/1) ... [2024-11-19 23:27:17,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:27:17,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:27:17,712 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) [2024-11-19 23:27:17,809 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 [2024-11-19 23:27:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 23:27:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-19 23:27:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-19 23:27:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-19 23:27:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-19 23:27:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-19 23:27:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-19 23:27:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-19 23:27:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-19 23:27:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-19 23:27:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-19 23:27:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-19 23:27:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-19 23:27:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-19 23:27:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-19 23:27:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 23:27:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 23:27:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 23:27:17,985 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 23:27:17,988 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 23:27:26,000 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-19 23:27:26,000 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 23:27:26,055 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 23:27:26,055 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-19 23:27:26,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:27:26 BoogieIcfgContainer [2024-11-19 23:27:26,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 23:27:26,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 23:27:26,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 23:27:26,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 23:27:26,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:27:13" (1/3) ... [2024-11-19 23:27:26,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735760fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:27:26, skipping insertion in model container [2024-11-19 23:27:26,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:27:16" (2/3) ... [2024-11-19 23:27:26,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735760fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:27:26, skipping insertion in model container [2024-11-19 23:27:26,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:27:26" (3/3) ... [2024-11-19 23:27:26,065 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-1.c [2024-11-19 23:27:26,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 23:27:26,082 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 23:27:26,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 23:27:26,208 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;@63f88001, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 23:27:26,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 23:27:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-19 23:27:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:26,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:26,238 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, 1] [2024-11-19 23:27:26,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:26,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1300199463, now seen corresponding path program 1 times [2024-11-19 23:27:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589264734] [2024-11-19 23:27:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:26,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589264734] [2024-11-19 23:27:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589264734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:27:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094710261] [2024-11-19 23:27:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:26,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:27:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:27:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:27:26,912 INFO L87 Difference]: Start difference. First operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:28,242 INFO L93 Difference]: Finished difference Result 4933 states and 9066 transitions. [2024-11-19 23:27:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:27:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:28,280 INFO L225 Difference]: With dead ends: 4933 [2024-11-19 23:27:28,281 INFO L226 Difference]: Without dead ends: 2522 [2024-11-19 23:27:28,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 23:27:28,294 INFO L432 NwaCegarLoop]: 4177 mSDtfsCounter, 4571 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 16699 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:28,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 16699 Invalid, 839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 23:27:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2024-11-19 23:27:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2435. [2024-11-19 23:27:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2389 states have (on average 1.8271243197990792) internal successors, (4365), 2393 states have internal predecessors, (4365), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-11-19 23:27:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4428 transitions. [2024-11-19 23:27:28,458 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4428 transitions. Word has length 80 [2024-11-19 23:27:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:28,458 INFO L471 AbstractCegarLoop]: Abstraction has 2435 states and 4428 transitions. [2024-11-19 23:27:28,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4428 transitions. [2024-11-19 23:27:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:28,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:28,466 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, 1] [2024-11-19 23:27:28,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 23:27:28,467 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:28,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1753327317, now seen corresponding path program 1 times [2024-11-19 23:27:28,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:28,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413150287] [2024-11-19 23:27:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413150287] [2024-11-19 23:27:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413150287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773627498] [2024-11-19 23:27:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:28,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:28,728 INFO L87 Difference]: Start difference. First operand 2435 states and 4428 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:29,997 INFO L93 Difference]: Finished difference Result 3020 states and 5320 transitions. [2024-11-19 23:27:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:27:29,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:30,011 INFO L225 Difference]: With dead ends: 3020 [2024-11-19 23:27:30,011 INFO L226 Difference]: Without dead ends: 2717 [2024-11-19 23:27:30,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:27:30,015 INFO L432 NwaCegarLoop]: 4216 mSDtfsCounter, 4499 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 20890 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:30,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 20890 Invalid, 1286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 23:27:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-11-19 23:27:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2577. [2024-11-19 23:27:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2512 states have (on average 1.8105095541401275) internal successors, (4548), 2517 states have internal predecessors, (4548), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-19 23:27:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4637 transitions. [2024-11-19 23:27:30,095 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4637 transitions. Word has length 80 [2024-11-19 23:27:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:30,096 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4637 transitions. [2024-11-19 23:27:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4637 transitions. [2024-11-19 23:27:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:30,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:30,099 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, 1] [2024-11-19 23:27:30,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 23:27:30,099 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:30,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash 67147479, now seen corresponding path program 1 times [2024-11-19 23:27:30,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:30,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152536998] [2024-11-19 23:27:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:30,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:30,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152536998] [2024-11-19 23:27:30,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152536998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:30,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:30,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989497577] [2024-11-19 23:27:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:30,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:30,321 INFO L87 Difference]: Start difference. First operand 2577 states and 4637 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:31,678 INFO L93 Difference]: Finished difference Result 3529 states and 6085 transitions. [2024-11-19 23:27:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:27:31,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:31,694 INFO L225 Difference]: With dead ends: 3529 [2024-11-19 23:27:31,694 INFO L226 Difference]: Without dead ends: 3084 [2024-11-19 23:27:31,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:27:31,699 INFO L432 NwaCegarLoop]: 4214 mSDtfsCounter, 4497 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 20888 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:31,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 20888 Invalid, 1284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 23:27:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2024-11-19 23:27:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2862. [2024-11-19 23:27:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2759 states have (on average 1.7814425516491483) internal successors, (4915), 2766 states have internal predecessors, (4915), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-11-19 23:27:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5060 transitions. [2024-11-19 23:27:31,819 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5060 transitions. Word has length 80 [2024-11-19 23:27:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:31,820 INFO L471 AbstractCegarLoop]: Abstraction has 2862 states and 5060 transitions. [2024-11-19 23:27:31,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5060 transitions. [2024-11-19 23:27:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:31,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:31,825 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, 1] [2024-11-19 23:27:31,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 23:27:31,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:31,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 12754581, now seen corresponding path program 1 times [2024-11-19 23:27:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190620426] [2024-11-19 23:27:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190620426] [2024-11-19 23:27:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190620426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981210733] [2024-11-19 23:27:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:31,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:31,978 INFO L87 Difference]: Start difference. First operand 2862 states and 5060 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:33,330 INFO L93 Difference]: Finished difference Result 4514 states and 7564 transitions. [2024-11-19 23:27:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:27:33,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:33,351 INFO L225 Difference]: With dead ends: 4514 [2024-11-19 23:27:33,351 INFO L226 Difference]: Without dead ends: 3784 [2024-11-19 23:27:33,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:27:33,359 INFO L432 NwaCegarLoop]: 4214 mSDtfsCounter, 4493 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20888 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:33,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20888 Invalid, 1275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 23:27:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2024-11-19 23:27:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3433. [2024-11-19 23:27:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3254 states have (on average 1.7360172095881992) internal successors, (5649), 3265 states have internal predecessors, (5649), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2024-11-19 23:27:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5912 transitions. [2024-11-19 23:27:33,538 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5912 transitions. Word has length 80 [2024-11-19 23:27:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:33,538 INFO L471 AbstractCegarLoop]: Abstraction has 3433 states and 5912 transitions. [2024-11-19 23:27:33,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5912 transitions. [2024-11-19 23:27:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:33,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:33,542 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, 1] [2024-11-19 23:27:33,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 23:27:33,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:33,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash -404642025, now seen corresponding path program 1 times [2024-11-19 23:27:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525054228] [2024-11-19 23:27:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525054228] [2024-11-19 23:27:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525054228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756423254] [2024-11-19 23:27:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:33,721 INFO L87 Difference]: Start difference. First operand 3433 states and 5912 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:35,068 INFO L93 Difference]: Finished difference Result 6891 states and 11132 transitions. [2024-11-19 23:27:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:27:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:35,094 INFO L225 Difference]: With dead ends: 6891 [2024-11-19 23:27:35,095 INFO L226 Difference]: Without dead ends: 5590 [2024-11-19 23:27:35,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 23:27:35,103 INFO L432 NwaCegarLoop]: 4212 mSDtfsCounter, 4624 mSDsluCounter, 16666 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4638 SdHoareTripleChecker+Valid, 20878 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:35,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4638 Valid, 20878 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 23:27:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2024-11-19 23:27:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 4556. [2024-11-19 23:27:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4233 states have (on average 1.6789510985116938) internal successors, (7107), 4252 states have internal predecessors, (7107), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2024-11-19 23:27:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 7608 transitions. [2024-11-19 23:27:35,381 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 7608 transitions. Word has length 80 [2024-11-19 23:27:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:35,382 INFO L471 AbstractCegarLoop]: Abstraction has 4556 states and 7608 transitions. [2024-11-19 23:27:35,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 7608 transitions. [2024-11-19 23:27:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:35,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:35,387 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, 1] [2024-11-19 23:27:35,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 23:27:35,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:35,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 274630229, now seen corresponding path program 1 times [2024-11-19 23:27:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105683058] [2024-11-19 23:27:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:35,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:35,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105683058] [2024-11-19 23:27:35,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105683058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:35,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:35,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:35,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483430292] [2024-11-19 23:27:35,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:35,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:35,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:35,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:35,561 INFO L87 Difference]: Start difference. First operand 4556 states and 7608 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:36,883 INFO L93 Difference]: Finished difference Result 10972 states and 17330 transitions. [2024-11-19 23:27:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:27:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:36,924 INFO L225 Difference]: With dead ends: 10972 [2024-11-19 23:27:36,925 INFO L226 Difference]: Without dead ends: 8548 [2024-11-19 23:27:36,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 23:27:36,939 INFO L432 NwaCegarLoop]: 4211 mSDtfsCounter, 4513 mSDsluCounter, 16663 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 20874 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:36,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4522 Valid, 20874 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 23:27:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2024-11-19 23:27:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 6631. [2024-11-19 23:27:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 6028 states have (on average 1.6152952886529528) internal successors, (9737), 6063 states have internal predecessors, (9737), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2024-11-19 23:27:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 10752 transitions. [2024-11-19 23:27:37,264 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 10752 transitions. Word has length 80 [2024-11-19 23:27:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:37,265 INFO L471 AbstractCegarLoop]: Abstraction has 6631 states and 10752 transitions. [2024-11-19 23:27:37,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 10752 transitions. [2024-11-19 23:27:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:37,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:37,272 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, 1] [2024-11-19 23:27:37,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 23:27:37,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:37,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2058762409, now seen corresponding path program 1 times [2024-11-19 23:27:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483965290] [2024-11-19 23:27:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483965290] [2024-11-19 23:27:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483965290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:37,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:27:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423645275] [2024-11-19 23:27:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:27:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:27:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:27:37,421 INFO L87 Difference]: Start difference. First operand 6631 states and 10752 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:39,246 INFO L93 Difference]: Finished difference Result 17878 states and 27888 transitions. [2024-11-19 23:27:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:27:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:39,320 INFO L225 Difference]: With dead ends: 17878 [2024-11-19 23:27:39,320 INFO L226 Difference]: Without dead ends: 13379 [2024-11-19 23:27:39,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 23:27:39,341 INFO L432 NwaCegarLoop]: 4212 mSDtfsCounter, 4502 mSDsluCounter, 16666 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4516 SdHoareTripleChecker+Valid, 20878 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:39,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4516 Valid, 20878 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 23:27:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13379 states. [2024-11-19 23:27:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13379 to 10955. [2024-11-19 23:27:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 9808 states have (on average 1.5661704730831973) internal successors, (15361), 9875 states have internal predecessors, (15361), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2024-11-19 23:27:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 17534 transitions. [2024-11-19 23:27:39,914 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 17534 transitions. Word has length 80 [2024-11-19 23:27:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 10955 states and 17534 transitions. [2024-11-19 23:27:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 17534 transitions. [2024-11-19 23:27:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-19 23:27:39,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:39,925 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, 1] [2024-11-19 23:27:39,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 23:27:39,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:39,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1498062631, now seen corresponding path program 1 times [2024-11-19 23:27:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552517832] [2024-11-19 23:27:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:39,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:39,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:39,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:40,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:40,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:27:40,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:40,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552517832] [2024-11-19 23:27:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552517832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:40,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:27:40,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:27:40,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293810111] [2024-11-19 23:27:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:40,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:27:40,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:40,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:27:40,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:27:40,045 INFO L87 Difference]: Start difference. First operand 10955 states and 17534 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:41,565 INFO L93 Difference]: Finished difference Result 26965 states and 42014 transitions. [2024-11-19 23:27:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:27:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-19 23:27:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:41,628 INFO L225 Difference]: With dead ends: 26965 [2024-11-19 23:27:41,628 INFO L226 Difference]: Without dead ends: 18143 [2024-11-19 23:27:41,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-19 23:27:41,659 INFO L432 NwaCegarLoop]: 4233 mSDtfsCounter, 4670 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 16612 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:41,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4697 Valid, 16612 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 23:27:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2024-11-19 23:27:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 15280. [2024-11-19 23:27:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15280 states, 13538 states have (on average 1.528512335647806) internal successors, (20693), 13670 states have internal predecessors, (20693), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2024-11-19 23:27:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15280 states to 15280 states and 23840 transitions. [2024-11-19 23:27:42,422 INFO L78 Accepts]: Start accepts. Automaton has 15280 states and 23840 transitions. Word has length 80 [2024-11-19 23:27:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:42,422 INFO L471 AbstractCegarLoop]: Abstraction has 15280 states and 23840 transitions. [2024-11-19 23:27:42,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:27:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15280 states and 23840 transitions. [2024-11-19 23:27:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 23:27:42,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:42,457 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, 1] [2024-11-19 23:27:42,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 23:27:42,458 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:42,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2122320658, now seen corresponding path program 1 times [2024-11-19 23:27:42,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513651641] [2024-11-19 23:27:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 23:27:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:27:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-19 23:27:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:27:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513651641] [2024-11-19 23:27:42,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513651641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:27:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963087452] [2024-11-19 23:27:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:42,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:27:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:27:42,625 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) [2024-11-19 23:27:42,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 23:27:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:42,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:27:42,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:27:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 23:27:42,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:27:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963087452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:27:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:27:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117241713] [2024-11-19 23:27:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:42,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:27:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:27:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:42,841 INFO L87 Difference]: Start difference. First operand 15280 states and 23840 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:27:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:44,219 INFO L93 Difference]: Finished difference Result 41227 states and 63420 transitions. [2024-11-19 23:27:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:27:44,219 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-19 23:27:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:44,337 INFO L225 Difference]: With dead ends: 41227 [2024-11-19 23:27:44,337 INFO L226 Difference]: Without dead ends: 28080 [2024-11-19 23:27:44,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:44,400 INFO L432 NwaCegarLoop]: 4196 mSDtfsCounter, 4152 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4152 SdHoareTripleChecker+Valid, 4410 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 [2024-11-19 23:27:44,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4152 Valid, 4410 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:27:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28080 states. [2024-11-19 23:27:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28080 to 27880. [2024-11-19 23:27:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27880 states, 24454 states have (on average 1.4978326654126115) internal successors, (36628), 24715 states have internal predecessors, (36628), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2024-11-19 23:27:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27880 states to 27880 states and 42749 transitions. [2024-11-19 23:27:45,754 INFO L78 Accepts]: Start accepts. Automaton has 27880 states and 42749 transitions. Word has length 130 [2024-11-19 23:27:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:45,754 INFO L471 AbstractCegarLoop]: Abstraction has 27880 states and 42749 transitions. [2024-11-19 23:27:45,754 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:27:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 27880 states and 42749 transitions. [2024-11-19 23:27:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 23:27:45,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:45,804 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, 1] [2024-11-19 23:27:45,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 23:27:46,005 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 [2024-11-19 23:27:46,006 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:46,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1621050866, now seen corresponding path program 1 times [2024-11-19 23:27:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:46,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445570627] [2024-11-19 23:27:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 23:27:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:27:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-19 23:27:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:27:46,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445570627] [2024-11-19 23:27:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445570627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:27:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412914385] [2024-11-19 23:27:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:46,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:27:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:27:46,339 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) [2024-11-19 23:27:46,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 23:27:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:46,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:27:46,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:27:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 23:27:46,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:27:46,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412914385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:46,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:27:46,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:27:46,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877397690] [2024-11-19 23:27:46,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:46,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:27:46,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:46,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:27:46,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:46,520 INFO L87 Difference]: Start difference. First operand 27880 states and 42749 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:27:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:49,101 INFO L93 Difference]: Finished difference Result 78681 states and 120015 transitions. [2024-11-19 23:27:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:27:49,102 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-19 23:27:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:49,379 INFO L225 Difference]: With dead ends: 78681 [2024-11-19 23:27:49,380 INFO L226 Difference]: Without dead ends: 52934 [2024-11-19 23:27:49,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:49,471 INFO L432 NwaCegarLoop]: 4196 mSDtfsCounter, 4146 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 4410 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 [2024-11-19 23:27:49,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 4410 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:27:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52934 states. [2024-11-19 23:27:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52934 to 52538. [2024-11-19 23:27:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52538 states, 45794 states have (on average 1.4786216534917238) internal successors, (67712), 46313 states have internal predecessors, (67712), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2024-11-19 23:27:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52538 states to 52538 states and 79681 transitions. [2024-11-19 23:27:52,646 INFO L78 Accepts]: Start accepts. Automaton has 52538 states and 79681 transitions. Word has length 130 [2024-11-19 23:27:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:27:52,647 INFO L471 AbstractCegarLoop]: Abstraction has 52538 states and 79681 transitions. [2024-11-19 23:27:52,648 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:27:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 52538 states and 79681 transitions. [2024-11-19 23:27:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 23:27:52,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:27:52,738 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, 1] [2024-11-19 23:27:52,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 23:27:52,942 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 [2024-11-19 23:27:52,943 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:27:52,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:27:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 771500242, now seen corresponding path program 1 times [2024-11-19 23:27:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:27:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500239317] [2024-11-19 23:27:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:27:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:27:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:27:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:27:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:27:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:27:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 23:27:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:27:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-19 23:27:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:27:53,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:27:53,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500239317] [2024-11-19 23:27:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500239317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:27:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183728707] [2024-11-19 23:27:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:27:53,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:27:53,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:27:53,118 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) [2024-11-19 23:27:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 23:27:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:27:53,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:27:53,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:27:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 23:27:53,281 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:27:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183728707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:27:53,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:27:53,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:27:53,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466801764] [2024-11-19 23:27:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:27:53,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:27:53,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:27:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:27:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:53,284 INFO L87 Difference]: Start difference. First operand 52538 states and 79681 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:27:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:27:57,636 INFO L93 Difference]: Finished difference Result 150453 states and 229117 transitions. [2024-11-19 23:27:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:27:57,637 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2024-11-19 23:27:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:27:58,285 INFO L225 Difference]: With dead ends: 150453 [2024-11-19 23:27:58,285 INFO L226 Difference]: Without dead ends: 100049 [2024-11-19 23:27:58,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:27:58,429 INFO L432 NwaCegarLoop]: 4400 mSDtfsCounter, 197 mSDsluCounter, 4194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8594 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:27:58,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8594 Invalid, 13 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:27:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100049 states. [2024-11-19 23:28:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100049 to 100049. [2024-11-19 23:28:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100049 states, 86830 states have (on average 1.4594840492917194) internal successors, (126727), 87734 states have internal predecessors, (126727), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2024-11-19 23:28:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100049 states to 100049 states and 151518 transitions. [2024-11-19 23:28:04,713 INFO L78 Accepts]: Start accepts. Automaton has 100049 states and 151518 transitions. Word has length 130 [2024-11-19 23:28:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:28:04,714 INFO L471 AbstractCegarLoop]: Abstraction has 100049 states and 151518 transitions. [2024-11-19 23:28:04,714 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:28:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 100049 states and 151518 transitions. [2024-11-19 23:28:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-19 23:28:05,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:28:05,329 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, 1] [2024-11-19 23:28:05,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 23:28:05,529 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 [2024-11-19 23:28:05,530 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:28:05,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:28:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1173211957, now seen corresponding path program 1 times [2024-11-19 23:28:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:28:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664197713] [2024-11-19 23:28:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:28:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:28:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:28:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 23:28:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 23:28:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-19 23:28:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-19 23:28:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-19 23:28:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:28:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-19 23:28:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:28:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-19 23:28:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 23:28:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:28:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664197713] [2024-11-19 23:28:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664197713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:28:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873900505] [2024-11-19 23:28:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:28:05,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:28:05,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:28:05,694 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) [2024-11-19 23:28:05,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 23:28:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:28:05,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:28:05,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:28:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 23:28:05,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:28:05,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873900505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:28:05,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:28:05,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:28:05,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47683213] [2024-11-19 23:28:05,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:28:05,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:28:05,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:28:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:28:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:28:05,981 INFO L87 Difference]: Start difference. First operand 100049 states and 151518 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)