./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label33.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 f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 17:18:33,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 17:18:33,417 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 17:18:33,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 17:18:33,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 17:18:33,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 17:18:33,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 17:18:33,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 17:18:33,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 17:18:33,448 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 17:18:33,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 17:18:33,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 17:18:33,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 17:18:33,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 17:18:33,451 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 17:18:33,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 17:18:33,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 17:18:33,452 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 17:18:33,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 17:18:33,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 17:18:33,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 17:18:33,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 17:18:33,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 17:18:33,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 17:18:33,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 17:18:33,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 17:18:33,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 17:18:33,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 17:18:33,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 17:18:33,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 17:18:33,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 17:18:33,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 17:18:33,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:18:33,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 17:18:33,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 17:18:33,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 17:18:33,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 17:18:33,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 17:18:33,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 17:18:33,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 17:18:33,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 17:18:33,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 17:18:33,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f [2024-11-11 17:18:33,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 17:18:33,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 17:18:33,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 17:18:33,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 17:18:33,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 17:18:33,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-11 17:18:34,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 17:18:35,253 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 17:18:35,254 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-11 17:18:35,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/470b216ed/3b0cf04713f7498bbe45313083d6f894/FLAGc0fb8a538 [2024-11-11 17:18:35,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/470b216ed/3b0cf04713f7498bbe45313083d6f894 [2024-11-11 17:18:35,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 17:18:35,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 17:18:35,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 17:18:35,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 17:18:35,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 17:18:35,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:18:35" (1/1) ... [2024-11-11 17:18:35,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0d20ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:35, skipping insertion in model container [2024-11-11 17:18:35,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:18:35" (1/1) ... [2024-11-11 17:18:35,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 17:18:35,709 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/eca-rers2012/Problem17_label33.c[2518,2531] [2024-11-11 17:18:36,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:18:36,141 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 17:18:36,158 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/eca-rers2012/Problem17_label33.c[2518,2531] [2024-11-11 17:18:36,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:18:36,416 INFO L204 MainTranslator]: Completed translation [2024-11-11 17:18:36,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36 WrapperNode [2024-11-11 17:18:36,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 17:18:36,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 17:18:36,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 17:18:36,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 17:18:36,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,676 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-11 17:18:36,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 17:18:36,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 17:18:36,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 17:18:36,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 17:18:36,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,858 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]. [2024-11-11 17:18:36,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:36,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:37,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:37,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:37,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 17:18:37,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 17:18:37,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 17:18:37,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 17:18:37,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (1/1) ... [2024-11-11 17:18:37,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:18:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:18:37,122 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) [2024-11-11 17:18:37,124 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 [2024-11-11 17:18:37,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 17:18:37,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 17:18:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 17:18:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 17:18:37,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 17:18:37,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 17:18:39,517 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-11 17:18:39,517 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 17:18:39,549 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 17:18:39,550 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 17:18:39,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:18:39 BoogieIcfgContainer [2024-11-11 17:18:39,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 17:18:39,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 17:18:39,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 17:18:39,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 17:18:39,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 05:18:35" (1/3) ... [2024-11-11 17:18:39,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd19ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:18:39, skipping insertion in model container [2024-11-11 17:18:39,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:18:36" (2/3) ... [2024-11-11 17:18:39,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd19ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:18:39, skipping insertion in model container [2024-11-11 17:18:39,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:18:39" (3/3) ... [2024-11-11 17:18:39,559 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33.c [2024-11-11 17:18:39,572 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 17:18:39,572 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 17:18:39,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 17:18:39,647 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;@1718fcf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 17:18:39,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 17:18:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-11 17:18:39,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:39,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:39,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:39,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1657508526, now seen corresponding path program 1 times [2024-11-11 17:18:39,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:39,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393282425] [2024-11-11 17:18:39,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:39,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:39,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393282425] [2024-11-11 17:18:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393282425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:39,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:39,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:18:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322215964] [2024-11-11 17:18:39,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:39,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:39,912 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:42,176 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-11 17:18:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-11 17:18:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:42,192 INFO L225 Difference]: With dead ends: 1667 [2024-11-11 17:18:42,192 INFO L226 Difference]: Without dead ends: 998 [2024-11-11 17:18:42,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:42,198 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 529 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:42,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-11 17:18:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-11 17:18:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-11 17:18:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-11 17:18:42,287 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 16 [2024-11-11 17:18:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:42,287 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-11 17:18:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-11 17:18:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-11 17:18:42,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:42,290 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:42,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 17:18:42,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:42,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash 38833391, now seen corresponding path program 1 times [2024-11-11 17:18:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444568138] [2024-11-11 17:18:42,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:42,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:42,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444568138] [2024-11-11 17:18:42,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444568138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:42,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:42,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:18:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411550362] [2024-11-11 17:18:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:42,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:42,508 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:44,243 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-11 17:18:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:44,244 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-11 17:18:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:44,250 INFO L225 Difference]: With dead ends: 2841 [2024-11-11 17:18:44,250 INFO L226 Difference]: Without dead ends: 1861 [2024-11-11 17:18:44,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:44,253 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:44,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 17:18:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-11 17:18:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-11 17:18:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-11 17:18:44,290 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 81 [2024-11-11 17:18:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:44,291 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-11 17:18:44,291 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-11 17:18:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-11 17:18:44,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:44,295 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:44,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 17:18:44,296 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:44,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1101270044, now seen corresponding path program 1 times [2024-11-11 17:18:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:44,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853439808] [2024-11-11 17:18:44,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853439808] [2024-11-11 17:18:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853439808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:44,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:44,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:18:44,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339515796] [2024-11-11 17:18:44,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:44,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:44,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:44,593 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:46,471 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-11 17:18:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-11 17:18:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:46,479 INFO L225 Difference]: With dead ends: 4591 [2024-11-11 17:18:46,479 INFO L226 Difference]: Without dead ends: 2736 [2024-11-11 17:18:46,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:46,485 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:46,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-11 17:18:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-11 17:18:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-11 17:18:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-11 17:18:46,520 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 121 [2024-11-11 17:18:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:46,521 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-11 17:18:46,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-11 17:18:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-11 17:18:46,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:46,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:46,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 17:18:46,526 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:46,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 582217397, now seen corresponding path program 1 times [2024-11-11 17:18:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820433212] [2024-11-11 17:18:46,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820433212] [2024-11-11 17:18:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820433212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:18:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304836502] [2024-11-11 17:18:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:46,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:46,657 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:48,085 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-11 17:18:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-11 17:18:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:48,096 INFO L225 Difference]: With dead ends: 6709 [2024-11-11 17:18:48,097 INFO L226 Difference]: Without dead ends: 3995 [2024-11-11 17:18:48,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:48,100 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:48,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 17:18:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-11 17:18:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-11 17:18:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-11 17:18:48,135 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 127 [2024-11-11 17:18:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:48,136 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-11 17:18:48,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-11 17:18:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-11 17:18:48,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:48,138 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:48,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 17:18:48,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:48,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1582736769, now seen corresponding path program 1 times [2024-11-11 17:18:48,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:48,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641783269] [2024-11-11 17:18:48,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641783269] [2024-11-11 17:18:48,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641783269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:48,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:48,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 17:18:48,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808962428] [2024-11-11 17:18:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:48,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 17:18:48,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 17:18:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:18:48,414 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:50,441 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-11 17:18:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-11 17:18:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:50,453 INFO L225 Difference]: With dead ends: 8005 [2024-11-11 17:18:50,453 INFO L226 Difference]: Without dead ends: 4865 [2024-11-11 17:18:50,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:18:50,458 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:50,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 17:18:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-11 17:18:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-11 17:18:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-11 17:18:50,525 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 164 [2024-11-11 17:18:50,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:50,526 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-11 17:18:50,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-11 17:18:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-11 17:18:50,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:50,529 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:50,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 17:18:50,530 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:50,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -387388432, now seen corresponding path program 1 times [2024-11-11 17:18:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:50,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313555777] [2024-11-11 17:18:50,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:50,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-11 17:18:50,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:50,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313555777] [2024-11-11 17:18:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313555777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:50,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:50,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037577210] [2024-11-11 17:18:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:50,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:50,640 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:52,156 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-11 17:18:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-11 17:18:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:52,180 INFO L225 Difference]: With dead ends: 12249 [2024-11-11 17:18:52,181 INFO L226 Difference]: Without dead ends: 7399 [2024-11-11 17:18:52,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:52,185 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 432 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:52,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-11 17:18:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-11 17:18:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-11 17:18:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-11 17:18:52,246 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 170 [2024-11-11 17:18:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:52,247 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-11 17:18:52,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-11 17:18:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-11 17:18:52,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:52,248 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 17:18:52,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 17:18:52,249 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:52,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 591527748, now seen corresponding path program 1 times [2024-11-11 17:18:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896151375] [2024-11-11 17:18:52,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:18:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896151375] [2024-11-11 17:18:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896151375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:52,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:52,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241218511] [2024-11-11 17:18:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:52,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:52,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:52,351 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:53,838 INFO L93 Difference]: Finished difference Result 13481 states and 17131 transitions. [2024-11-11 17:18:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:53,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-11 17:18:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:53,855 INFO L225 Difference]: With dead ends: 13481 [2024-11-11 17:18:53,855 INFO L226 Difference]: Without dead ends: 8657 [2024-11-11 17:18:53,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:53,861 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 468 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:53,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 483 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 17:18:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8657 states. [2024-11-11 17:18:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8657 to 7378. [2024-11-11 17:18:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 1.2479327639962043) internal successors, (9206), 7377 states have internal predecessors, (9206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 9206 transitions. [2024-11-11 17:18:53,944 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 9206 transitions. Word has length 183 [2024-11-11 17:18:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:53,944 INFO L471 AbstractCegarLoop]: Abstraction has 7378 states and 9206 transitions. [2024-11-11 17:18:53,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 9206 transitions. [2024-11-11 17:18:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-11 17:18:53,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:53,946 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:53,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 17:18:53,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:53,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1880356032, now seen corresponding path program 1 times [2024-11-11 17:18:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:53,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282248393] [2024-11-11 17:18:53,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:18:54,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:54,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282248393] [2024-11-11 17:18:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282248393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650677607] [2024-11-11 17:18:54,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:54,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:54,161 INFO L87 Difference]: Start difference. First operand 7378 states and 9206 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:55,675 INFO L93 Difference]: Finished difference Result 19035 states and 23868 transitions. [2024-11-11 17:18:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-11-11 17:18:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:55,689 INFO L225 Difference]: With dead ends: 19035 [2024-11-11 17:18:55,689 INFO L226 Difference]: Without dead ends: 10807 [2024-11-11 17:18:55,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:55,697 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 370 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:55,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 896 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 17:18:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2024-11-11 17:18:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 10799. [2024-11-11 17:18:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10799 states, 10798 states have (on average 1.1793850713095018) internal successors, (12735), 10798 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10799 states to 10799 states and 12735 transitions. [2024-11-11 17:18:55,804 INFO L78 Accepts]: Start accepts. Automaton has 10799 states and 12735 transitions. Word has length 232 [2024-11-11 17:18:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:55,805 INFO L471 AbstractCegarLoop]: Abstraction has 10799 states and 12735 transitions. [2024-11-11 17:18:55,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10799 states and 12735 transitions. [2024-11-11 17:18:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-11 17:18:55,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:55,808 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:55,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 17:18:55,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:55,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash -18097380, now seen corresponding path program 1 times [2024-11-11 17:18:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:55,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139999370] [2024-11-11 17:18:55,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:55,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:18:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139999370] [2024-11-11 17:18:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139999370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:18:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601219410] [2024-11-11 17:18:56,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:56,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:18:56,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:18:56,044 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) [2024-11-11 17:18:56,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 17:18:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:56,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 17:18:56,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:18:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 70 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:18:56,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 17:18:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:18:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601219410] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 17:18:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-11 17:18:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-11 17:18:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085259758] [2024-11-11 17:18:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:56,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:18:56,546 INFO L87 Difference]: Start difference. First operand 10799 states and 12735 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:59,164 INFO L93 Difference]: Finished difference Result 35677 states and 42172 transitions. [2024-11-11 17:18:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:59,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2024-11-11 17:18:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:59,191 INFO L225 Difference]: With dead ends: 35677 [2024-11-11 17:18:59,192 INFO L226 Difference]: Without dead ends: 24019 [2024-11-11 17:18:59,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:18:59,205 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 1085 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 1254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1254 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:59,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 144 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1254 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-11 17:18:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24019 states. [2024-11-11 17:18:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24019 to 22742. [2024-11-11 17:18:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22742 states, 22741 states have (on average 1.1553141902291015) internal successors, (26273), 22741 states have internal predecessors, (26273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22742 states to 22742 states and 26273 transitions. [2024-11-11 17:18:59,410 INFO L78 Accepts]: Start accepts. Automaton has 22742 states and 26273 transitions. Word has length 240 [2024-11-11 17:18:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:59,410 INFO L471 AbstractCegarLoop]: Abstraction has 22742 states and 26273 transitions. [2024-11-11 17:18:59,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 22742 states and 26273 transitions. [2024-11-11 17:18:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-11 17:18:59,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:59,413 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:59,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 17:18:59,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:18:59,618 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:59,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1861634320, now seen corresponding path program 1 times [2024-11-11 17:18:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130149527] [2024-11-11 17:18:59,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:59,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-11 17:18:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130149527] [2024-11-11 17:18:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130149527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:59,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94877282] [2024-11-11 17:18:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:59,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:59,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:59,766 INFO L87 Difference]: Start difference. First operand 22742 states and 26273 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:01,160 INFO L93 Difference]: Finished difference Result 50583 states and 58592 transitions. [2024-11-11 17:19:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:01,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-11-11 17:19:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:01,203 INFO L225 Difference]: With dead ends: 50583 [2024-11-11 17:19:01,204 INFO L226 Difference]: Without dead ends: 27416 [2024-11-11 17:19:01,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:01,227 INFO L435 NwaCegarLoop]: 775 mSDtfsCounter, 378 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:01,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 842 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:19:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27416 states. [2024-11-11 17:19:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27416 to 27416. [2024-11-11 17:19:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27416 states, 27415 states have (on average 1.1312055444099944) internal successors, (31012), 27415 states have internal predecessors, (31012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27416 states to 27416 states and 31012 transitions. [2024-11-11 17:19:01,482 INFO L78 Accepts]: Start accepts. Automaton has 27416 states and 31012 transitions. Word has length 253 [2024-11-11 17:19:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:01,482 INFO L471 AbstractCegarLoop]: Abstraction has 27416 states and 31012 transitions. [2024-11-11 17:19:01,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 27416 states and 31012 transitions. [2024-11-11 17:19:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-11 17:19:01,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:01,489 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:01,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 17:19:01,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:01,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1700470054, now seen corresponding path program 1 times [2024-11-11 17:19:01,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064252287] [2024-11-11 17:19:01,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:01,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 78 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064252287] [2024-11-11 17:19:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064252287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310107312] [2024-11-11 17:19:01,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:19:01,862 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) [2024-11-11 17:19:01,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 17:19:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:01,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 17:19:01,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:19:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 188 proven. 78 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:02,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 17:19:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:02,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310107312] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:02,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-11 17:19:02,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-11 17:19:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030488502] [2024-11-11 17:19:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:02,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:19:02,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:19:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:19:02,336 INFO L87 Difference]: Start difference. First operand 27416 states and 31012 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:04,638 INFO L93 Difference]: Finished difference Result 68481 states and 77437 transitions. [2024-11-11 17:19:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:19:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-11 17:19:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:04,678 INFO L225 Difference]: With dead ends: 68481 [2024-11-11 17:19:04,678 INFO L226 Difference]: Without dead ends: 40640 [2024-11-11 17:19:04,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:19:04,688 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 874 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:04,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 180 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 17:19:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40640 states. [2024-11-11 17:19:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40640 to 38512. [2024-11-11 17:19:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38512 states, 38511 states have (on average 1.1338578587935915) internal successors, (43666), 38511 states have internal predecessors, (43666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38512 states to 38512 states and 43666 transitions. [2024-11-11 17:19:04,994 INFO L78 Accepts]: Start accepts. Automaton has 38512 states and 43666 transitions. Word has length 311 [2024-11-11 17:19:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:04,995 INFO L471 AbstractCegarLoop]: Abstraction has 38512 states and 43666 transitions. [2024-11-11 17:19:04,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 38512 states and 43666 transitions. [2024-11-11 17:19:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-11 17:19:05,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:05,002 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-11 17:19:05,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 17:19:05,203 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,SelfDestructingSolverStorable10 [2024-11-11 17:19:05,203 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:05,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 873519532, now seen corresponding path program 1 times [2024-11-11 17:19:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17069339] [2024-11-11 17:19:05,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-11 17:19:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:05,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17069339] [2024-11-11 17:19:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17069339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:05,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:05,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:19:05,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288568072] [2024-11-11 17:19:05,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:05,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:05,381 INFO L87 Difference]: Start difference. First operand 38512 states and 43666 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:06,833 INFO L93 Difference]: Finished difference Result 89785 states and 102267 transitions. [2024-11-11 17:19:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:06,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 411 [2024-11-11 17:19:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:06,884 INFO L225 Difference]: With dead ends: 89785 [2024-11-11 17:19:06,884 INFO L226 Difference]: Without dead ends: 49573 [2024-11-11 17:19:06,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:06,914 INFO L435 NwaCegarLoop]: 728 mSDtfsCounter, 338 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:06,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 787 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 17:19:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49573 states. [2024-11-11 17:19:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49573 to 37619. [2024-11-11 17:19:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37619 states, 37618 states have (on average 1.132729012706683) internal successors, (42611), 37618 states have internal predecessors, (42611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37619 states to 37619 states and 42611 transitions. [2024-11-11 17:19:07,283 INFO L78 Accepts]: Start accepts. Automaton has 37619 states and 42611 transitions. Word has length 411 [2024-11-11 17:19:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:07,283 INFO L471 AbstractCegarLoop]: Abstraction has 37619 states and 42611 transitions. [2024-11-11 17:19:07,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37619 states and 42611 transitions. [2024-11-11 17:19:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-11 17:19:07,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:07,290 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-11 17:19:07,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 17:19:07,291 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:07,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash -826212447, now seen corresponding path program 1 times [2024-11-11 17:19:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767651717] [2024-11-11 17:19:07,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-11 17:19:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767651717] [2024-11-11 17:19:07,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767651717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:07,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:07,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:19:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816624261] [2024-11-11 17:19:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:07,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:07,676 INFO L87 Difference]: Start difference. First operand 37619 states and 42611 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:09,233 INFO L93 Difference]: Finished difference Result 87614 states and 98821 transitions. [2024-11-11 17:19:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2024-11-11 17:19:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:09,284 INFO L225 Difference]: With dead ends: 87614 [2024-11-11 17:19:09,284 INFO L226 Difference]: Without dead ends: 49571 [2024-11-11 17:19:09,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:09,310 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 476 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:09,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 348 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 17:19:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49571 states. [2024-11-11 17:19:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49571 to 38042. [2024-11-11 17:19:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38042 states, 38041 states have (on average 1.1311216844983045) internal successors, (43029), 38041 states have internal predecessors, (43029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38042 states to 38042 states and 43029 transitions. [2024-11-11 17:19:09,727 INFO L78 Accepts]: Start accepts. Automaton has 38042 states and 43029 transitions. Word has length 412 [2024-11-11 17:19:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:09,727 INFO L471 AbstractCegarLoop]: Abstraction has 38042 states and 43029 transitions. [2024-11-11 17:19:09,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 38042 states and 43029 transitions. [2024-11-11 17:19:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-11 17:19:09,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:09,737 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:09,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 17:19:09,737 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:09,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:09,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1921236114, now seen corresponding path program 1 times [2024-11-11 17:19:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:09,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737600880] [2024-11-11 17:19:09,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-11 17:19:09,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:09,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737600880] [2024-11-11 17:19:09,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737600880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:09,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:09,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:19:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74454497] [2024-11-11 17:19:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:09,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:09,899 INFO L87 Difference]: Start difference. First operand 38042 states and 43029 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:11,484 INFO L93 Difference]: Finished difference Result 90134 states and 101693 transitions. [2024-11-11 17:19:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-11-11 17:19:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:11,540 INFO L225 Difference]: With dead ends: 90134 [2024-11-11 17:19:11,541 INFO L226 Difference]: Without dead ends: 51668 [2024-11-11 17:19:11,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:11,563 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 489 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:11,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 299 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:19:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51668 states. [2024-11-11 17:19:11,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51668 to 38441. [2024-11-11 17:19:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38441 states, 38440 states have (on average 1.1205515088449531) internal successors, (43074), 38440 states have internal predecessors, (43074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38441 states to 38441 states and 43074 transitions. [2024-11-11 17:19:11,900 INFO L78 Accepts]: Start accepts. Automaton has 38441 states and 43074 transitions. Word has length 439 [2024-11-11 17:19:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:11,900 INFO L471 AbstractCegarLoop]: Abstraction has 38441 states and 43074 transitions. [2024-11-11 17:19:11,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 38441 states and 43074 transitions. [2024-11-11 17:19:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-11 17:19:11,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:11,906 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:11,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 17:19:11,907 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:11,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1085398361, now seen corresponding path program 1 times [2024-11-11 17:19:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677876488] [2024-11-11 17:19:11,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 296 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:19:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677876488] [2024-11-11 17:19:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677876488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400788733] [2024-11-11 17:19:12,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:12,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:19:12,784 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) [2024-11-11 17:19:12,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 17:19:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:12,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 17:19:12,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:19:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 214 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:13,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 17:19:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 214 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400788733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 17:19:13,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 17:19:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-11 17:19:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995793516] [2024-11-11 17:19:13,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 17:19:13,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 17:19:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 17:19:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-11 17:19:13,890 INFO L87 Difference]: Start difference. First operand 38441 states and 43074 transitions. Second operand has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:23,006 INFO L93 Difference]: Finished difference Result 135679 states and 151025 transitions. [2024-11-11 17:19:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-11 17:19:23,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2024-11-11 17:19:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:23,125 INFO L225 Difference]: With dead ends: 135679 [2024-11-11 17:19:23,125 INFO L226 Difference]: Without dead ends: 95537 [2024-11-11 17:19:23,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-11 17:19:23,157 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 7122 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12553 mSolverCounterSat, 2151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7122 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 14704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 12553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:23,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7122 Valid, 477 Invalid, 14704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2151 Valid, 12553 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-11 17:19:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95537 states. [2024-11-11 17:19:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95537 to 87867. [2024-11-11 17:19:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87867 states, 87866 states have (on average 1.0985136457787996) internal successors, (96522), 87866 states have internal predecessors, (96522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87867 states to 87867 states and 96522 transitions. [2024-11-11 17:19:24,167 INFO L78 Accepts]: Start accepts. Automaton has 87867 states and 96522 transitions. Word has length 451 [2024-11-11 17:19:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:24,167 INFO L471 AbstractCegarLoop]: Abstraction has 87867 states and 96522 transitions. [2024-11-11 17:19:24,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 87867 states and 96522 transitions. [2024-11-11 17:19:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-11 17:19:24,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:24,173 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:24,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 17:19:24,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:24,374 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:24,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:24,374 INFO L85 PathProgramCache]: Analyzing trace with hash 503973094, now seen corresponding path program 1 times [2024-11-11 17:19:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:24,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349534411] [2024-11-11 17:19:24,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-11 17:19:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:25,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349534411] [2024-11-11 17:19:25,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349534411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:19:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533491619] [2024-11-11 17:19:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:25,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:19:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:19:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:19:25,165 INFO L87 Difference]: Start difference. First operand 87867 states and 96522 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:27,597 INFO L93 Difference]: Finished difference Result 209401 states and 229452 transitions. [2024-11-11 17:19:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:19:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2024-11-11 17:19:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:27,731 INFO L225 Difference]: With dead ends: 209401 [2024-11-11 17:19:27,731 INFO L226 Difference]: Without dead ends: 116425 [2024-11-11 17:19:27,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:19:27,785 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 784 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:27,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 248 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 17:19:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116425 states. [2024-11-11 17:19:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116425 to 110852. [2024-11-11 17:19:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110852 states, 110851 states have (on average 1.0950104193917962) internal successors, (121383), 110851 states have internal predecessors, (121383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110852 states to 110852 states and 121383 transitions. [2024-11-11 17:19:29,500 INFO L78 Accepts]: Start accepts. Automaton has 110852 states and 121383 transitions. Word has length 460 [2024-11-11 17:19:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:29,500 INFO L471 AbstractCegarLoop]: Abstraction has 110852 states and 121383 transitions. [2024-11-11 17:19:29,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 110852 states and 121383 transitions. [2024-11-11 17:19:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-11 17:19:29,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:29,508 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:29,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-11 17:19:29,508 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:29,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 295544723, now seen corresponding path program 1 times [2024-11-11 17:19:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:29,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910527411] [2024-11-11 17:19:29,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:19:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:30,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910527411] [2024-11-11 17:19:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910527411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:30,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:19:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879443617] [2024-11-11 17:19:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:30,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:19:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:19:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:19:30,160 INFO L87 Difference]: Start difference. First operand 110852 states and 121383 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:32,705 INFO L93 Difference]: Finished difference Result 248113 states and 271708 transitions. [2024-11-11 17:19:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:19:32,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2024-11-11 17:19:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:32,848 INFO L225 Difference]: With dead ends: 248113 [2024-11-11 17:19:32,848 INFO L226 Difference]: Without dead ends: 136411 [2024-11-11 17:19:32,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:19:32,876 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 969 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:32,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 251 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 17:19:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136411 states. [2024-11-11 17:19:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136411 to 116810. [2024-11-11 17:19:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116810 states, 116809 states have (on average 1.0999751731459049) internal successors, (128487), 116809 states have internal predecessors, (128487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116810 states to 116810 states and 128487 transitions. [2024-11-11 17:19:34,273 INFO L78 Accepts]: Start accepts. Automaton has 116810 states and 128487 transitions. Word has length 494 [2024-11-11 17:19:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:34,274 INFO L471 AbstractCegarLoop]: Abstraction has 116810 states and 128487 transitions. [2024-11-11 17:19:34,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 116810 states and 128487 transitions. [2024-11-11 17:19:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-11 17:19:34,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:34,283 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:34,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-11 17:19:34,283 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:34,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1617166263, now seen corresponding path program 1 times [2024-11-11 17:19:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660669991] [2024-11-11 17:19:34,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 257 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660669991] [2024-11-11 17:19:35,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660669991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:35,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340625219] [2024-11-11 17:19:35,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:35,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:19:35,359 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) [2024-11-11 17:19:35,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 17:19:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:35,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 17:19:35,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:19:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:19:37,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:19:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340625219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:37,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:19:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 17:19:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141802304] [2024-11-11 17:19:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:19:37,466 INFO L87 Difference]: Start difference. First operand 116810 states and 128487 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:39,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:39,814 INFO L93 Difference]: Finished difference Result 250258 states and 274833 transitions. [2024-11-11 17:19:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:39,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2024-11-11 17:19:39,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:39,964 INFO L225 Difference]: With dead ends: 250258 [2024-11-11 17:19:39,964 INFO L226 Difference]: Without dead ends: 133450 [2024-11-11 17:19:39,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:19:39,988 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 196 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:39,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 347 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 17:19:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133450 states. [2024-11-11 17:19:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133450 to 131734. [2024-11-11 17:19:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131734 states, 131733 states have (on average 1.0905923344947734) internal successors, (143667), 131733 states have internal predecessors, (143667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131734 states to 131734 states and 143667 transitions. [2024-11-11 17:19:41,641 INFO L78 Accepts]: Start accepts. Automaton has 131734 states and 143667 transitions. Word has length 507 [2024-11-11 17:19:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:41,642 INFO L471 AbstractCegarLoop]: Abstraction has 131734 states and 143667 transitions. [2024-11-11 17:19:41,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 131734 states and 143667 transitions. [2024-11-11 17:19:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-11 17:19:41,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:41,654 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:19:41,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 17:19:41,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 17:19:41,855 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:41,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash -454745803, now seen corresponding path program 1 times [2024-11-11 17:19:41,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:41,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462959172] [2024-11-11 17:19:41,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:41,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 257 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 17:19:42,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462959172] [2024-11-11 17:19:42,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462959172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549597468] [2024-11-11 17:19:42,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:42,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:19:42,885 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) [2024-11-11 17:19:42,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 17:19:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:43,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 17:19:43,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:19:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-11 17:19:43,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:19:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549597468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:43,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:19:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-11 17:19:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014910309] [2024-11-11 17:19:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:43,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:19:43,079 INFO L87 Difference]: Start difference. First operand 131734 states and 143667 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:45,009 INFO L93 Difference]: Finished difference Result 275395 states and 300214 transitions. [2024-11-11 17:19:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:45,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2024-11-11 17:19:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:45,197 INFO L225 Difference]: With dead ends: 275395 [2024-11-11 17:19:45,197 INFO L226 Difference]: Without dead ends: 143236 [2024-11-11 17:19:45,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:19:45,264 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 442 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:45,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 766 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:19:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143236 states. [2024-11-11 17:19:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143236 to 138964. [2024-11-11 17:19:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138964 states, 138963 states have (on average 1.0839504040643912) internal successors, (150629), 138963 states have internal predecessors, (150629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138964 states to 138964 states and 150629 transitions. [2024-11-11 17:19:47,253 INFO L78 Accepts]: Start accepts. Automaton has 138964 states and 150629 transitions. Word has length 515 [2024-11-11 17:19:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:47,253 INFO L471 AbstractCegarLoop]: Abstraction has 138964 states and 150629 transitions. [2024-11-11 17:19:47,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 138964 states and 150629 transitions. [2024-11-11 17:19:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-11 17:19:47,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:47,265 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-11 17:19:47,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 17:19:47,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:47,466 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:47,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1547645957, now seen corresponding path program 1 times [2024-11-11 17:19:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856189457] [2024-11-11 17:19:47,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:47,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-11 17:19:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856189457] [2024-11-11 17:19:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856189457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:47,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:19:47,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:19:47,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452414905] [2024-11-11 17:19:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:47,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:19:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:19:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:47,656 INFO L87 Difference]: Start difference. First operand 138964 states and 150629 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:19:48,994 INFO L93 Difference]: Finished difference Result 274511 states and 297340 transitions. [2024-11-11 17:19:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:19:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 548 [2024-11-11 17:19:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:19:49,144 INFO L225 Difference]: With dead ends: 274511 [2024-11-11 17:19:49,144 INFO L226 Difference]: Without dead ends: 135549 [2024-11-11 17:19:49,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:19:49,225 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 629 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 17:19:49,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 104 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 17:19:49,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135549 states. [2024-11-11 17:19:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135549 to 131285. [2024-11-11 17:19:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131285 states, 131284 states have (on average 1.0831632186709728) internal successors, (142202), 131284 states have internal predecessors, (142202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131285 states to 131285 states and 142202 transitions. [2024-11-11 17:19:51,186 INFO L78 Accepts]: Start accepts. Automaton has 131285 states and 142202 transitions. Word has length 548 [2024-11-11 17:19:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:19:51,187 INFO L471 AbstractCegarLoop]: Abstraction has 131285 states and 142202 transitions. [2024-11-11 17:19:51,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:19:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 131285 states and 142202 transitions. [2024-11-11 17:19:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-11 17:19:51,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:19:51,200 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:19:51,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-11 17:19:51,201 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:19:51,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:19:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash -122313712, now seen corresponding path program 1 times [2024-11-11 17:19:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:19:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190146892] [2024-11-11 17:19:51,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:19:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 389 proven. 14 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-11 17:19:52,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:19:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190146892] [2024-11-11 17:19:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190146892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:19:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135317838] [2024-11-11 17:19:52,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:19:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:19:52,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:19:52,293 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) [2024-11-11 17:19:52,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 17:19:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:19:52,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 17:19:52,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:19:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-11 17:19:55,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:19:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135317838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:19:55,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:19:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-11 17:19:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222089534] [2024-11-11 17:19:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:19:55,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 17:19:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:19:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 17:19:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-11 17:19:55,099 INFO L87 Difference]: Start difference. First operand 131285 states and 142202 transitions. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)