./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_label45+token_ring.02.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_label45+token_ring.02.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 1e48f4337a15a9c341fdd857d44943beb3f49e54e3888dcfe82472f36a11730d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 23:24:43,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 23:24:43,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 23:24:43,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 23:24:43,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 23:24:43,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 23:24:43,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 23:24:43,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 23:24:43,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 23:24:43,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 23:24:43,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 23:24:43,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 23:24:43,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 23:24:43,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 23:24:43,421 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 23:24:43,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 23:24:43,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 23:24:43,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 23:24:43,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 23:24:43,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 23:24:43,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 23:24:43,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 23:24:43,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 23:24:43,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 23:24:43,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 23:24:43,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 23:24:43,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 23:24:43,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 23:24:43,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 23:24:43,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 23:24:43,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 23:24:43,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 23:24:43,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:24:43,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 23:24:43,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 23:24:43,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 23:24:43,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 23:24:43,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 23:24:43,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 23:24:43,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 23:24:43,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 23:24:43,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 23:24:43,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e48f4337a15a9c341fdd857d44943beb3f49e54e3888dcfe82472f36a11730d [2024-11-19 23:24:43,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 23:24:43,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 23:24:43,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 23:24:43,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 23:24:43,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 23:24:43,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-1.c [2024-11-19 23:24:44,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 23:24:45,328 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 23:24:45,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-1.c [2024-11-19 23:24:45,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965e28ea5/fe0ee65bfef4460096538dc10f6eda90/FLAGbaa15a36a [2024-11-19 23:24:45,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965e28ea5/fe0ee65bfef4460096538dc10f6eda90 [2024-11-19 23:24:45,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 23:24:45,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 23:24:45,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 23:24:45,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 23:24:45,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 23:24:45,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:24:45" (1/1) ... [2024-11-19 23:24:45,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3d5965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:45, skipping insertion in model container [2024-11-19 23:24:45,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:24:45" (1/1) ... [2024-11-19 23:24:45,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 23:24:46,691 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_label45+token_ring.02.cil-1.c[380323,380336] [2024-11-19 23:24:46,711 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_label45+token_ring.02.cil-1.c[383339,383352] [2024-11-19 23:24:46,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:24:46,823 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 23:24:47,401 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_label45+token_ring.02.cil-1.c[380323,380336] [2024-11-19 23:24:47,406 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_label45+token_ring.02.cil-1.c[383339,383352] [2024-11-19 23:24:47,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:24:47,459 INFO L204 MainTranslator]: Completed translation [2024-11-19 23:24:47,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47 WrapperNode [2024-11-19 23:24:47,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 23:24:47,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 23:24:47,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 23:24:47,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 23:24:47,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:47,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:47,878 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-11-19 23:24:47,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 23:24:47,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 23:24:47,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 23:24:47,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 23:24:47,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:47,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:47,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,002 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 23:24:48,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 23:24:48,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 23:24:48,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 23:24:48,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 23:24:48,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (1/1) ... [2024-11-19 23:24:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:24:48,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:24:48,357 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 23:24:48,405 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 23:24:48,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 23:24:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-19 23:24:48,446 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-19 23:24:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-19 23:24:48,450 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-19 23:24:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-19 23:24:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-19 23:24:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-19 23:24:48,451 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-19 23:24:48,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 23:24:48,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 23:24:48,531 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 23:24:48,533 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 23:24:54,395 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-19 23:24:54,395 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 23:24:54,433 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 23:24:54,433 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 23:24:54,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:24:54 BoogieIcfgContainer [2024-11-19 23:24:54,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 23:24:54,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 23:24:54,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 23:24:54,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 23:24:54,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:24:45" (1/3) ... [2024-11-19 23:24:54,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a823947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:24:54, skipping insertion in model container [2024-11-19 23:24:54,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:24:47" (2/3) ... [2024-11-19 23:24:54,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a823947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:24:54, skipping insertion in model container [2024-11-19 23:24:54,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:24:54" (3/3) ... [2024-11-19 23:24:54,441 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.02.cil-1.c [2024-11-19 23:24:54,453 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 23:24:54,453 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 23:24:54,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 23:24:54,535 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;@726a4831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 23:24:54,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 23:24:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 23:24:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:24:54,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:24:54,555 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] [2024-11-19 23:24:54,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:24:54,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:24:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -257117409, now seen corresponding path program 1 times [2024-11-19 23:24:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:24:54,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246564382] [2024-11-19 23:24:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:24:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:24:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:24:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:24:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:24:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:24:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:24:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:54,969 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 23:24:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:24:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246564382] [2024-11-19 23:24:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246564382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:24:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:24:54,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:24:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306258789] [2024-11-19 23:24:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:24:54,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:24:54,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:24:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:24:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:24:55,004 INFO L87 Difference]: Start difference. First operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:24:55,777 INFO L93 Difference]: Finished difference Result 4811 states and 8854 transitions. [2024-11-19 23:24:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:24:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:24:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:24:55,800 INFO L225 Difference]: With dead ends: 4811 [2024-11-19 23:24:55,800 INFO L226 Difference]: Without dead ends: 2433 [2024-11-19 23:24:55,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 23:24:55,810 INFO L432 NwaCegarLoop]: 4145 mSDtfsCounter, 4439 mSDsluCounter, 12417 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 16562 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:24:55,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4448 Valid, 16562 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:24:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2024-11-19 23:24:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2370. [2024-11-19 23:24:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2328 states have (on average 1.8311855670103092) internal successors, (4263), 2331 states have internal predecessors, (4263), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-19 23:24:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 4320 transitions. [2024-11-19 23:24:55,921 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 4320 transitions. Word has length 68 [2024-11-19 23:24:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:24:55,921 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 4320 transitions. [2024-11-19 23:24:55,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 4320 transitions. [2024-11-19 23:24:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:24:55,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:24:55,926 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] [2024-11-19 23:24:55,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 23:24:55,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:24:55,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:24:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1270216611, now seen corresponding path program 1 times [2024-11-19 23:24:55,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:24:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427604009] [2024-11-19 23:24:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:24:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:24:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:24:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:24:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:24:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:24:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:24:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:56,086 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 23:24:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:24:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427604009] [2024-11-19 23:24:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427604009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:24:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:24:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:24:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932287230] [2024-11-19 23:24:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:24:56,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:24:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:24:56,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:24:56,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:24:56,091 INFO L87 Difference]: Start difference. First operand 2370 states and 4320 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:24:56,901 INFO L93 Difference]: Finished difference Result 2822 states and 4989 transitions. [2024-11-19 23:24:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:24:56,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:24:56,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:24:56,915 INFO L225 Difference]: With dead ends: 2822 [2024-11-19 23:24:56,916 INFO L226 Difference]: Without dead ends: 2583 [2024-11-19 23:24:56,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:24:56,920 INFO L432 NwaCegarLoop]: 4156 mSDtfsCounter, 4367 mSDsluCounter, 16454 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 20610 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:24:56,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4376 Valid, 20610 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:24:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2024-11-19 23:24:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2482. [2024-11-19 23:24:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2422 states have (on average 1.8158546655656482) internal successors, (4398), 2426 states have internal predecessors, (4398), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-11-19 23:24:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 4479 transitions. [2024-11-19 23:24:56,986 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 4479 transitions. Word has length 68 [2024-11-19 23:24:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:24:56,987 INFO L471 AbstractCegarLoop]: Abstraction has 2482 states and 4479 transitions. [2024-11-19 23:24:56,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 4479 transitions. [2024-11-19 23:24:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:24:56,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:24:56,989 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] [2024-11-19 23:24:56,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 23:24:56,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:24:56,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:24:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2146235617, now seen corresponding path program 1 times [2024-11-19 23:24:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:24:56,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975791002] [2024-11-19 23:24:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:24:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:24:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:24:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:24:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:24:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:24:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:24:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,110 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 23:24:57,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:24:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975791002] [2024-11-19 23:24:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975791002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:24:57,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:24:57,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:24:57,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355525114] [2024-11-19 23:24:57,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:24:57,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:24:57,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:24:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:24:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:24:57,112 INFO L87 Difference]: Start difference. First operand 2482 states and 4479 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:24:57,849 INFO L93 Difference]: Finished difference Result 3217 states and 5562 transitions. [2024-11-19 23:24:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:24:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:24:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:24:57,859 INFO L225 Difference]: With dead ends: 3217 [2024-11-19 23:24:57,860 INFO L226 Difference]: Without dead ends: 2866 [2024-11-19 23:24:57,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:24:57,862 INFO L432 NwaCegarLoop]: 4085 mSDtfsCounter, 4405 mSDsluCounter, 16264 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 20349 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:24:57,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4414 Valid, 20349 Invalid, 856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:24:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2024-11-19 23:24:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2707. [2024-11-19 23:24:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2611 states have (on average 1.7882037533512065) internal successors, (4669), 2617 states have internal predecessors, (4669), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2024-11-19 23:24:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4802 transitions. [2024-11-19 23:24:57,925 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4802 transitions. Word has length 68 [2024-11-19 23:24:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:24:57,926 INFO L471 AbstractCegarLoop]: Abstraction has 2707 states and 4802 transitions. [2024-11-19 23:24:57,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4802 transitions. [2024-11-19 23:24:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:24:57,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:24:57,927 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] [2024-11-19 23:24:57,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 23:24:57,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:24:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:24:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1704831005, now seen corresponding path program 1 times [2024-11-19 23:24:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:24:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126707713] [2024-11-19 23:24:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:24:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:24:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:24:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:57,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:24:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:58,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:24:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:58,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:24:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:58,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:24:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:58,032 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 23:24:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:24:58,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126707713] [2024-11-19 23:24:58,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126707713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:24:58,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:24:58,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:24:58,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596160060] [2024-11-19 23:24:58,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:24:58,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:24:58,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:24:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:24:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:24:58,034 INFO L87 Difference]: Start difference. First operand 2707 states and 4802 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:24:58,854 INFO L93 Difference]: Finished difference Result 4079 states and 6811 transitions. [2024-11-19 23:24:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:24:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:24:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:24:58,868 INFO L225 Difference]: With dead ends: 4079 [2024-11-19 23:24:58,868 INFO L226 Difference]: Without dead ends: 3503 [2024-11-19 23:24:58,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 23:24:58,873 INFO L432 NwaCegarLoop]: 4151 mSDtfsCounter, 4377 mSDsluCounter, 16443 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 20594 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 23:24:58,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4385 Valid, 20594 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 23:24:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2024-11-19 23:24:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3131. [2024-11-19 23:24:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2967 states have (on average 1.7462082912032355) internal successors, (5181), 2977 states have internal predecessors, (5181), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2024-11-19 23:24:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5416 transitions. [2024-11-19 23:24:58,950 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5416 transitions. Word has length 68 [2024-11-19 23:24:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:24:58,950 INFO L471 AbstractCegarLoop]: Abstraction has 3131 states and 5416 transitions. [2024-11-19 23:24:58,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5416 transitions. [2024-11-19 23:24:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:24:58,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:24:58,952 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] [2024-11-19 23:24:58,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 23:24:58,952 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:24:58,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:24:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 561550181, now seen corresponding path program 1 times [2024-11-19 23:24:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:24:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364514846] [2024-11-19 23:24:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:24:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:24:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:58,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:24:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:59,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:24:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:59,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:24:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:59,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:24:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:59,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:24:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:24:59,048 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 23:24:59,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:24:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364514846] [2024-11-19 23:24:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364514846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:24:59,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:24:59,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 23:24:59,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775043482] [2024-11-19 23:24:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:24:59,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 23:24:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:24:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 23:24:59,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 23:24:59,050 INFO L87 Difference]: Start difference. First operand 3131 states and 5416 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:24:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:24:59,809 INFO L93 Difference]: Finished difference Result 5513 states and 8887 transitions. [2024-11-19 23:24:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 23:24:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:24:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:24:59,889 INFO L225 Difference]: With dead ends: 5513 [2024-11-19 23:24:59,890 INFO L226 Difference]: Without dead ends: 4513 [2024-11-19 23:24:59,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 23:24:59,893 INFO L432 NwaCegarLoop]: 4152 mSDtfsCounter, 4379 mSDsluCounter, 16446 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4391 SdHoareTripleChecker+Valid, 20598 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:24:59,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4391 Valid, 20598 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:24:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2024-11-19 23:24:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3992. [2024-11-19 23:24:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3696 states have (on average 1.6869588744588744) internal successors, (6235), 3714 states have internal predecessors, (6235), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2024-11-19 23:25:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6684 transitions. [2024-11-19 23:25:00,002 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6684 transitions. Word has length 68 [2024-11-19 23:25:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:00,002 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 6684 transitions. [2024-11-19 23:25:00,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:25:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6684 transitions. [2024-11-19 23:25:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:25:00,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:00,004 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] [2024-11-19 23:25:00,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 23:25:00,005 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:00,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 80469923, now seen corresponding path program 1 times [2024-11-19 23:25:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:00,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46219801] [2024-11-19 23:25:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:00,089 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 23:25:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46219801] [2024-11-19 23:25:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46219801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:25:00,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:25:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073931184] [2024-11-19 23:25:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:00,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:25:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:25:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:25:00,092 INFO L87 Difference]: Start difference. First operand 3992 states and 6684 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:25:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:00,759 INFO L93 Difference]: Finished difference Result 7407 states and 11705 transitions. [2024-11-19 23:25:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 23:25:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 23:25:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:00,783 INFO L225 Difference]: With dead ends: 7407 [2024-11-19 23:25:00,784 INFO L226 Difference]: Without dead ends: 5547 [2024-11-19 23:25:00,795 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 23:25:00,799 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4509 mSDsluCounter, 12260 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4534 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:00,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4534 Valid, 16438 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 23:25:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2024-11-19 23:25:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4960. [2024-11-19 23:25:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4506 states have (on average 1.6344873501997337) internal successors, (7365), 4541 states have internal predecessors, (7365), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2024-11-19 23:25:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 8034 transitions. [2024-11-19 23:25:00,943 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 8034 transitions. Word has length 68 [2024-11-19 23:25:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:00,943 INFO L471 AbstractCegarLoop]: Abstraction has 4960 states and 8034 transitions. [2024-11-19 23:25:00,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 23:25:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 8034 transitions. [2024-11-19 23:25:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 23:25:00,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:00,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:00,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 23:25:00,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:00,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash -855841062, now seen corresponding path program 1 times [2024-11-19 23:25:00,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657253902] [2024-11-19 23:25:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:00,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 23:25:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:25:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657253902] [2024-11-19 23:25:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657253902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378707011] [2024-11-19 23:25:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:01,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:01,087 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 23:25:01,088 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 23:25:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:01,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:01,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 23:25:01,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378707011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:01,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:01,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:25:01,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410473843] [2024-11-19 23:25:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:01,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:01,230 INFO L87 Difference]: Start difference. First operand 4960 states and 8034 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:25:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:01,604 INFO L93 Difference]: Finished difference Result 10473 states and 16024 transitions. [2024-11-19 23:25:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2024-11-19 23:25:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:01,643 INFO L225 Difference]: With dead ends: 10473 [2024-11-19 23:25:01,643 INFO L226 Difference]: Without dead ends: 7645 [2024-11-19 23:25:01,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:01,655 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4101 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4304 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 23:25:01,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4304 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2024-11-19 23:25:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 7591. [2024-11-19 23:25:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 6723 states have (on average 1.5650751152759186) internal successors, (10522), 6791 states have internal predecessors, (10522), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2024-11-19 23:25:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 11777 transitions. [2024-11-19 23:25:02,029 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 11777 transitions. Word has length 111 [2024-11-19 23:25:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:02,030 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 11777 transitions. [2024-11-19 23:25:02,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 23:25:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 11777 transitions. [2024-11-19 23:25:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 23:25:02,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:02,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:02,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 23:25:02,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:02,239 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:02,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1748397894, now seen corresponding path program 1 times [2024-11-19 23:25:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373898161] [2024-11-19 23:25:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-19 23:25:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 23:25:02,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373898161] [2024-11-19 23:25:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373898161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:02,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191390240] [2024-11-19 23:25:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:02,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:02,360 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 23:25:02,361 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 23:25:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:02,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:02,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:25:02,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191390240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353768710] [2024-11-19 23:25:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:02,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:02,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:02,468 INFO L87 Difference]: Start difference. First operand 7591 states and 11777 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:25:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:02,892 INFO L93 Difference]: Finished difference Result 18185 states and 27229 transitions. [2024-11-19 23:25:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2024-11-19 23:25:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:02,933 INFO L225 Difference]: With dead ends: 18185 [2024-11-19 23:25:02,933 INFO L226 Difference]: Without dead ends: 12727 [2024-11-19 23:25:02,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:02,950 INFO L432 NwaCegarLoop]: 4304 mSDtfsCounter, 156 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8444 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:02,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8444 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2024-11-19 23:25:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2024-11-19 23:25:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 11046 states have (on average 1.5039833423863842) internal successors, (16613), 11163 states have internal predecessors, (16613), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2024-11-19 23:25:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 19184 transitions. [2024-11-19 23:25:03,424 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 19184 transitions. Word has length 111 [2024-11-19 23:25:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:03,424 INFO L471 AbstractCegarLoop]: Abstraction has 12727 states and 19184 transitions. [2024-11-19 23:25:03,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 23:25:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 19184 transitions. [2024-11-19 23:25:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-19 23:25:03,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:03,445 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:03,452 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 23:25:03,649 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,SelfDestructingSolverStorable7 [2024-11-19 23:25:03,650 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:03,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 508044484, now seen corresponding path program 1 times [2024-11-19 23:25:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553195376] [2024-11-19 23:25:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-19 23:25:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-19 23:25:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 23:25:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553195376] [2024-11-19 23:25:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553195376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:03,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642705924] [2024-11-19 23:25:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:03,767 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 23:25:03,768 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 23:25:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:03,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:03,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:25:03,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:03,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642705924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:03,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:03,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-19 23:25:03,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061631705] [2024-11-19 23:25:03,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:03,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:03,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:03,952 INFO L87 Difference]: Start difference. First operand 12727 states and 19184 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-19 23:25:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:04,631 INFO L93 Difference]: Finished difference Result 33475 states and 49297 transitions. [2024-11-19 23:25:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:04,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 144 [2024-11-19 23:25:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:04,698 INFO L225 Difference]: With dead ends: 33475 [2024-11-19 23:25:04,698 INFO L226 Difference]: Without dead ends: 22885 [2024-11-19 23:25:04,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 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 23:25:04,729 INFO L432 NwaCegarLoop]: 4145 mSDtfsCounter, 4058 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 4307 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 23:25:04,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4058 Valid, 4307 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22885 states. [2024-11-19 23:25:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22885 to 22675. [2024-11-19 23:25:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22675 states, 19414 states have (on average 1.4625012877305037) internal successors, (28393), 19645 states have internal predecessors, (28393), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2024-11-19 23:25:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22675 states to 22675 states and 33300 transitions. [2024-11-19 23:25:05,627 INFO L78 Accepts]: Start accepts. Automaton has 22675 states and 33300 transitions. Word has length 144 [2024-11-19 23:25:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:05,627 INFO L471 AbstractCegarLoop]: Abstraction has 22675 states and 33300 transitions. [2024-11-19 23:25:05,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-19 23:25:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 22675 states and 33300 transitions. [2024-11-19 23:25:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-19 23:25:05,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:05,675 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, 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] [2024-11-19 23:25:05,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 23:25:05,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:05,876 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:05,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash 663714365, now seen corresponding path program 1 times [2024-11-19 23:25:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160375381] [2024-11-19 23:25:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 23:25:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 23:25:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-19 23:25:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-19 23:25:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:25:05,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160375381] [2024-11-19 23:25:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160375381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166447270] [2024-11-19 23:25:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:05,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:05,994 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:05,996 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 23:25:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:06,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:06,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-19 23:25:06,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166447270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:06,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:06,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369826903] [2024-11-19 23:25:06,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:06,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:06,142 INFO L87 Difference]: Start difference. First operand 22675 states and 33300 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 23:25:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:07,043 INFO L93 Difference]: Finished difference Result 36401 states and 53409 transitions. [2024-11-19 23:25:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2024-11-19 23:25:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:07,109 INFO L225 Difference]: With dead ends: 36401 [2024-11-19 23:25:07,109 INFO L226 Difference]: Without dead ends: 20297 [2024-11-19 23:25:07,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 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 23:25:07,152 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4094 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:07,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 4176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20297 states. [2024-11-19 23:25:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20297 to 15281. [2024-11-19 23:25:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 13228 states have (on average 1.4423193226489266) internal successors, (19079), 13349 states have internal predecessors, (19079), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2024-11-19 23:25:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 21888 transitions. [2024-11-19 23:25:08,122 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 21888 transitions. Word has length 162 [2024-11-19 23:25:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:08,122 INFO L471 AbstractCegarLoop]: Abstraction has 15281 states and 21888 transitions. [2024-11-19 23:25:08,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 23:25:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 21888 transitions. [2024-11-19 23:25:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-19 23:25:08,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:08,149 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:08,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 23:25:08,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:08,350 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:08,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash -781315429, now seen corresponding path program 1 times [2024-11-19 23:25:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331824774] [2024-11-19 23:25:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-19 23:25:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-19 23:25:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-19 23:25:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-19 23:25:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:25:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331824774] [2024-11-19 23:25:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331824774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472627187] [2024-11-19 23:25:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:08,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:08,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:08,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:08,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 23:25:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:08,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 23:25:08,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-19 23:25:08,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472627187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:08,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:08,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125461984] [2024-11-19 23:25:08,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:08,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:08,580 INFO L87 Difference]: Start difference. First operand 15281 states and 21888 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:09,086 INFO L93 Difference]: Finished difference Result 25378 states and 35603 transitions. [2024-11-19 23:25:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 162 [2024-11-19 23:25:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:09,135 INFO L225 Difference]: With dead ends: 25378 [2024-11-19 23:25:09,135 INFO L226 Difference]: Without dead ends: 16237 [2024-11-19 23:25:09,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 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 23:25:09,153 INFO L432 NwaCegarLoop]: 4179 mSDtfsCounter, 4088 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:09,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4348 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16237 states. [2024-11-19 23:25:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16237 to 16171. [2024-11-19 23:25:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16171 states, 14030 states have (on average 1.4168923734853884) internal successors, (19879), 14151 states have internal predecessors, (19879), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2024-11-19 23:25:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 22798 transitions. [2024-11-19 23:25:09,727 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 22798 transitions. Word has length 162 [2024-11-19 23:25:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:09,728 INFO L471 AbstractCegarLoop]: Abstraction has 16171 states and 22798 transitions. [2024-11-19 23:25:09,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 22798 transitions. [2024-11-19 23:25:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 23:25:09,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:09,748 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:09,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 23:25:09,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 23:25:09,952 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:09,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2057783295, now seen corresponding path program 1 times [2024-11-19 23:25:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984482537] [2024-11-19 23:25:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:09,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:09,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:25:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:25:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:25:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:25:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984482537] [2024-11-19 23:25:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984482537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684392665] [2024-11-19 23:25:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:10,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:10,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 23:25:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:10,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:10,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 23:25:10,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:10,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684392665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:10,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:10,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641827436] [2024-11-19 23:25:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:10,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:10,172 INFO L87 Difference]: Start difference. First operand 16171 states and 22798 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:25:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:11,099 INFO L93 Difference]: Finished difference Result 43327 states and 59768 transitions. [2024-11-19 23:25:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2024-11-19 23:25:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:11,183 INFO L225 Difference]: With dead ends: 43327 [2024-11-19 23:25:11,183 INFO L226 Difference]: Without dead ends: 29295 [2024-11-19 23:25:11,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 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 23:25:11,214 INFO L432 NwaCegarLoop]: 4299 mSDtfsCounter, 144 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:11,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 8435 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29295 states. [2024-11-19 23:25:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29295 to 29249. [2024-11-19 23:25:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29249 states, 25150 states have (on average 1.3727634194831013) internal successors, (34525), 25391 states have internal predecessors, (34525), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2024-11-19 23:25:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29249 states to 29249 states and 40568 transitions. [2024-11-19 23:25:12,446 INFO L78 Accepts]: Start accepts. Automaton has 29249 states and 40568 transitions. Word has length 163 [2024-11-19 23:25:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:12,446 INFO L471 AbstractCegarLoop]: Abstraction has 29249 states and 40568 transitions. [2024-11-19 23:25:12,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:25:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 29249 states and 40568 transitions. [2024-11-19 23:25:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 23:25:12,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:12,475 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:12,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 23:25:12,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:12,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:12,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 373119872, now seen corresponding path program 1 times [2024-11-19 23:25:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977136917] [2024-11-19 23:25:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:25:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-19 23:25:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:25:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 23:25:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977136917] [2024-11-19 23:25:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977136917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038341255] [2024-11-19 23:25:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:12,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:12,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:12,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:12,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 23:25:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:12,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:12,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 23:25:12,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038341255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:12,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:12,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903647438] [2024-11-19 23:25:12,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:12,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:12,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:12,957 INFO L87 Difference]: Start difference. First operand 29249 states and 40568 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 23:25:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:14,018 INFO L93 Difference]: Finished difference Result 57681 states and 80264 transitions. [2024-11-19 23:25:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-19 23:25:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:14,104 INFO L225 Difference]: With dead ends: 57681 [2024-11-19 23:25:14,105 INFO L226 Difference]: Without dead ends: 30571 [2024-11-19 23:25:14,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 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 23:25:14,157 INFO L432 NwaCegarLoop]: 4136 mSDtfsCounter, 4071 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:14,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30571 states. [2024-11-19 23:25:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30571 to 30527. [2024-11-19 23:25:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30527 states, 26368 states have (on average 1.3315761529126213) internal successors, (35111), 26609 states have internal predecessors, (35111), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2024-11-19 23:25:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30527 states to 30527 states and 41110 transitions. [2024-11-19 23:25:15,919 INFO L78 Accepts]: Start accepts. Automaton has 30527 states and 41110 transitions. Word has length 163 [2024-11-19 23:25:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:15,920 INFO L471 AbstractCegarLoop]: Abstraction has 30527 states and 41110 transitions. [2024-11-19 23:25:15,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-19 23:25:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 30527 states and 41110 transitions. [2024-11-19 23:25:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-19 23:25:15,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:15,958 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:15,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 23:25:16,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:16,158 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:16,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash 790570081, now seen corresponding path program 1 times [2024-11-19 23:25:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:16,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836205495] [2024-11-19 23:25:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-19 23:25:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-19 23:25:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-19 23:25:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-19 23:25:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-19 23:25:16,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:16,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836205495] [2024-11-19 23:25:16,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836205495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828275031] [2024-11-19 23:25:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:16,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:16,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:16,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:16,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 23:25:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:16,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 23:25:16,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 23:25:16,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828275031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:16,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:16,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364889142] [2024-11-19 23:25:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:16,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:16,410 INFO L87 Difference]: Start difference. First operand 30527 states and 41110 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:25:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:18,403 INFO L93 Difference]: Finished difference Result 83033 states and 111042 transitions. [2024-11-19 23:25:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2024-11-19 23:25:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:18,579 INFO L225 Difference]: With dead ends: 83033 [2024-11-19 23:25:18,579 INFO L226 Difference]: Without dead ends: 54653 [2024-11-19 23:25:18,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 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 23:25:18,643 INFO L432 NwaCegarLoop]: 4297 mSDtfsCounter, 149 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 8432 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:18,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 8432 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54653 states. [2024-11-19 23:25:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54653 to 54651. [2024-11-19 23:25:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54651 states, 46784 states have (on average 1.2991834815321477) internal successors, (60781), 47265 states have internal predecessors, (60781), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-19 23:25:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54651 states to 54651 states and 73246 transitions. [2024-11-19 23:25:21,662 INFO L78 Accepts]: Start accepts. Automaton has 54651 states and 73246 transitions. Word has length 163 [2024-11-19 23:25:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:21,663 INFO L471 AbstractCegarLoop]: Abstraction has 54651 states and 73246 transitions. [2024-11-19 23:25:21,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-19 23:25:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 54651 states and 73246 transitions. [2024-11-19 23:25:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:25:21,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:21,716 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:21,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 23:25:21,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 23:25:21,917 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:21,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1412929672, now seen corresponding path program 1 times [2024-11-19 23:25:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928611402] [2024-11-19 23:25:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:21,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:21,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:21,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-19 23:25:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-19 23:25:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-19 23:25:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-19 23:25:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 23:25:22,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:22,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928611402] [2024-11-19 23:25:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928611402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037260871] [2024-11-19 23:25:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:22,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:22,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:22,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:22,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 23:25:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:22,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 23:25:22,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-19 23:25:22,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037260871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:22,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:22,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056074087] [2024-11-19 23:25:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:22,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:22,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:22,161 INFO L87 Difference]: Start difference. First operand 54651 states and 73246 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:24,474 INFO L93 Difference]: Finished difference Result 95855 states and 127872 transitions. [2024-11-19 23:25:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2024-11-19 23:25:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:24,643 INFO L225 Difference]: With dead ends: 95855 [2024-11-19 23:25:24,643 INFO L226 Difference]: Without dead ends: 56045 [2024-11-19 23:25:24,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 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 23:25:24,703 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4094 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:24,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 4333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56045 states. [2024-11-19 23:25:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56045 to 54531. [2024-11-19 23:25:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54531 states, 46664 states have (on average 1.290952340133722) internal successors, (60241), 47145 states have internal predecessors, (60241), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-19 23:25:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54531 states to 54531 states and 72706 transitions. [2024-11-19 23:25:27,837 INFO L78 Accepts]: Start accepts. Automaton has 54531 states and 72706 transitions. Word has length 164 [2024-11-19 23:25:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:27,838 INFO L471 AbstractCegarLoop]: Abstraction has 54531 states and 72706 transitions. [2024-11-19 23:25:27,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 54531 states and 72706 transitions. [2024-11-19 23:25:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:25:27,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:27,908 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:27,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 23:25:28,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 23:25:28,109 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:28,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1651731176, now seen corresponding path program 1 times [2024-11-19 23:25:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951408059] [2024-11-19 23:25:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-19 23:25:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-19 23:25:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:25:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-19 23:25:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-19 23:25:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951408059] [2024-11-19 23:25:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951408059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:25:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049077657] [2024-11-19 23:25:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:28,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:25:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:25:28,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:25:28,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 23:25:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:28,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 23:25:28,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:25:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 23:25:28,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 23:25:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049077657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:28,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 23:25:28,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 23:25:28,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014481738] [2024-11-19 23:25:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:28,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:25:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:25:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:25:28,381 INFO L87 Difference]: Start difference. First operand 54531 states and 72706 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:25:31,208 INFO L93 Difference]: Finished difference Result 95939 states and 127052 transitions. [2024-11-19 23:25:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:25:31,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2024-11-19 23:25:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:25:31,394 INFO L225 Difference]: With dead ends: 95939 [2024-11-19 23:25:31,394 INFO L226 Difference]: Without dead ends: 55373 [2024-11-19 23:25:31,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 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 23:25:31,470 INFO L432 NwaCegarLoop]: 4153 mSDtfsCounter, 4095 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:25:31,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4315 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:25:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55373 states. [2024-11-19 23:25:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55373 to 54531. [2024-11-19 23:25:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54531 states, 46664 states have (on average 1.2845234013372193) internal successors, (59941), 47145 states have internal predecessors, (59941), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-19 23:25:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54531 states to 54531 states and 72406 transitions. [2024-11-19 23:25:34,404 INFO L78 Accepts]: Start accepts. Automaton has 54531 states and 72406 transitions. Word has length 164 [2024-11-19 23:25:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:25:34,404 INFO L471 AbstractCegarLoop]: Abstraction has 54531 states and 72406 transitions. [2024-11-19 23:25:34,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-19 23:25:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 54531 states and 72406 transitions. [2024-11-19 23:25:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 23:25:34,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:25:34,474 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:25:34,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 23:25:34,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 23:25:34,675 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:25:34,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:25:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash 829634212, now seen corresponding path program 1 times [2024-11-19 23:25:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:25:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119302406] [2024-11-19 23:25:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:25:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:25:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 23:25:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 23:25:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-19 23:25:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 23:25:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 23:25:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-19 23:25:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-19 23:25:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-19 23:25:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-19 23:25:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-19 23:25:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:25:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 23:25:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:25:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119302406] [2024-11-19 23:25:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119302406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:25:34,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:25:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:25:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674700794] [2024-11-19 23:25:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:25:34,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:25:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:25:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:25:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:25:34,757 INFO L87 Difference]: Start difference. First operand 54531 states and 72406 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)