./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_label54.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 11e41592a4a90a36b9d41c817b9251e7ae28a6a8e3ac5da0511d1aedc7736ffe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:53:09,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:53:09,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:53:09,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:53:09,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:53:09,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:53:09,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:53:09,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:53:09,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:53:09,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:53:09,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:53:09,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:53:09,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:53:09,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:53:09,479 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:53:09,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:53:09,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:53:09,480 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:53:09,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:53:09,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:53:09,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:53:09,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:53:09,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:53:09,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:53:09,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:53:09,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:53:09,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:53:09,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:53:09,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:53:09,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:53:09,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:53:09,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:53:09,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:53:09,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:53:09,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:53:09,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:53:09,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:53:09,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:53:09,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:53:09,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:53:09,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:53:09,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:53:09,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11e41592a4a90a36b9d41c817b9251e7ae28a6a8e3ac5da0511d1aedc7736ffe [2024-11-18 10:53:09,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:53:09,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:53:09,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:53:09,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:53:09,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:53:09,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2024-11-18 10:53:11,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:53:11,295 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:53:11,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label54.c [2024-11-18 10:53:11,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51c8e64c/f478eea2c71c4897886528d1ec2ae9e5/FLAGe01521f7b [2024-11-18 10:53:11,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c51c8e64c/f478eea2c71c4897886528d1ec2ae9e5 [2024-11-18 10:53:11,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:53:11,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:53:11,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:53:11,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:53:11,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:53:11,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:53:11" (1/1) ... [2024-11-18 10:53:11,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f7fa73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:11, skipping insertion in model container [2024-11-18 10:53:11,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:53:11" (1/1) ... [2024-11-18 10:53:11,665 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:53:11,928 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_label54.c[2072,2085] [2024-11-18 10:53:12,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:53:12,491 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:53:12,505 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_label54.c[2072,2085] [2024-11-18 10:53:12,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:53:12,813 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:53:12,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12 WrapperNode [2024-11-18 10:53:12,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:53:12,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:53:12,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:53:12,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:53:12,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:12,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,043 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:53:13,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:53:13,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:53:13,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:53:13,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:53:13,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,281 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]. [2024-11-18 10:53:13,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:53:13,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:53:13,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:53:13,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:53:13,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (1/1) ... [2024-11-18 10:53:13,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:53:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:13,545 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) [2024-11-18 10:53:13,551 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 [2024-11-18 10:53:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:53:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:53:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:53:13,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:53:13,647 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:53:13,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:53:16,124 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:53:16,124 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:53:16,155 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:53:16,155 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:53:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:53:16 BoogieIcfgContainer [2024-11-18 10:53:16,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:53:16,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:53:16,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:53:16,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:53:16,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:53:11" (1/3) ... [2024-11-18 10:53:16,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c212c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:53:16, skipping insertion in model container [2024-11-18 10:53:16,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:53:12" (2/3) ... [2024-11-18 10:53:16,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c212c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:53:16, skipping insertion in model container [2024-11-18 10:53:16,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:53:16" (3/3) ... [2024-11-18 10:53:16,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2024-11-18 10:53:16,181 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:53:16,182 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:53:16,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:53:16,243 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;@603c1573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:53:16,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:53:16,248 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) [2024-11-18 10:53:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 10:53:16,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:16,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:16,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:16,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2024-11-18 10:53:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:16,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453831353] [2024-11-18 10:53:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:16,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:16,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:16,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453831353] [2024-11-18 10:53:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453831353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:16,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:16,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908444014] [2024-11-18 10:53:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:16,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:16,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:16,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:16,498 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-18 10:53:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:18,799 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-18 10:53:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-18 10:53:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:18,817 INFO L225 Difference]: With dead ends: 1667 [2024-11-18 10:53:18,817 INFO L226 Difference]: Without dead ends: 998 [2024-11-18 10:53:18,821 INFO L431 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 [2024-11-18 10:53:18,824 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 532 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 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 [2024-11-18 10:53:18,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 10:53:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-18 10:53:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-18 10:53:18,908 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) [2024-11-18 10:53:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-18 10:53:18,913 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 13 [2024-11-18 10:53:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:18,914 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-18 10:53:18,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-18 10:53:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-18 10:53:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 10:53:18,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:18,917 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:53:18,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:53:18,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:18,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2108516819, now seen corresponding path program 1 times [2024-11-18 10:53:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496444384] [2024-11-18 10:53:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496444384] [2024-11-18 10:53:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496444384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:19,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366954832] [2024-11-18 10:53:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:19,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:19,112 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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) [2024-11-18 10:53:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:20,951 INFO L93 Difference]: Finished difference Result 2843 states and 4882 transitions. [2024-11-18 10:53:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:20,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2024-11-18 10:53:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:20,958 INFO L225 Difference]: With dead ends: 2843 [2024-11-18 10:53:20,959 INFO L226 Difference]: Without dead ends: 1863 [2024-11-18 10:53:20,962 INFO L431 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 [2024-11-18 10:53:20,963 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:20,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 495 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:53:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2024-11-18 10:53:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1857. [2024-11-18 10:53:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4552801724137931) internal successors, (2701), 1856 states have internal predecessors, (2701), 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) [2024-11-18 10:53:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2701 transitions. [2024-11-18 10:53:21,003 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2701 transitions. Word has length 78 [2024-11-18 10:53:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:21,004 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2701 transitions. [2024-11-18 10:53:21,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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) [2024-11-18 10:53:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2701 transitions. [2024-11-18 10:53:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 10:53:21,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:21,007 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:53:21,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:53:21,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:21,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash -42874468, now seen corresponding path program 1 times [2024-11-18 10:53:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115512587] [2024-11-18 10:53:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115512587] [2024-11-18 10:53:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115512587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:21,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:21,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:53:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108840973] [2024-11-18 10:53:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:21,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:21,124 INFO L87 Difference]: Start difference. First operand 1857 states and 2701 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-11-18 10:53:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:22,675 INFO L93 Difference]: Finished difference Result 5425 states and 7895 transitions. [2024-11-18 10:53:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2024-11-18 10:53:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:22,685 INFO L225 Difference]: With dead ends: 5425 [2024-11-18 10:53:22,686 INFO L226 Difference]: Without dead ends: 3570 [2024-11-18 10:53:22,689 INFO L431 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 [2024-11-18 10:53:22,690 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:22,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:53:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2024-11-18 10:53:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2714. [2024-11-18 10:53:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.315886472539624) internal successors, (3570), 2713 states have internal predecessors, (3570), 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) [2024-11-18 10:53:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3570 transitions. [2024-11-18 10:53:22,745 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3570 transitions. Word has length 84 [2024-11-18 10:53:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:22,746 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 3570 transitions. [2024-11-18 10:53:22,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-11-18 10:53:22,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3570 transitions. [2024-11-18 10:53:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 10:53:22,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:22,756 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:22,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:53:22,756 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:22,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -609171172, now seen corresponding path program 1 times [2024-11-18 10:53:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:22,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603427925] [2024-11-18 10:53:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603427925] [2024-11-18 10:53:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603427925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:53:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685672364] [2024-11-18 10:53:23,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:23,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:53:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:23,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:53:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:53:23,289 INFO L87 Difference]: Start difference. First operand 2714 states and 3570 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-18 10:53:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:25,244 INFO L93 Difference]: Finished difference Result 7147 states and 9641 transitions. [2024-11-18 10:53:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:25,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 161 [2024-11-18 10:53:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:25,256 INFO L225 Difference]: With dead ends: 7147 [2024-11-18 10:53:25,256 INFO L226 Difference]: Without dead ends: 4435 [2024-11-18 10:53:25,261 INFO L431 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 [2024-11-18 10:53:25,261 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1651 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:25,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 863 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:53:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2024-11-18 10:53:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 4424. [2024-11-18 10:53:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 1.2912050644359032) internal successors, (5711), 4423 states have internal predecessors, (5711), 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) [2024-11-18 10:53:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5711 transitions. [2024-11-18 10:53:25,326 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5711 transitions. Word has length 161 [2024-11-18 10:53:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:25,327 INFO L471 AbstractCegarLoop]: Abstraction has 4424 states and 5711 transitions. [2024-11-18 10:53:25,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-18 10:53:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5711 transitions. [2024-11-18 10:53:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 10:53:25,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:25,333 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:25,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:53:25,333 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:25,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1294742197, now seen corresponding path program 1 times [2024-11-18 10:53:25,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282499511] [2024-11-18 10:53:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:53:25,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282499511] [2024-11-18 10:53:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282499511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551208130] [2024-11-18 10:53:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:25,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:25,515 INFO L87 Difference]: Start difference. First operand 4424 states and 5711 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-18 10:53:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:27,223 INFO L93 Difference]: Finished difference Result 10593 states and 13804 transitions. [2024-11-18 10:53:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:27,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 167 [2024-11-18 10:53:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:27,244 INFO L225 Difference]: With dead ends: 10593 [2024-11-18 10:53:27,245 INFO L226 Difference]: Without dead ends: 6171 [2024-11-18 10:53:27,251 INFO L431 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 [2024-11-18 10:53:27,252 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 540 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:27,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 240 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:53:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2024-11-18 10:53:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6153. [2024-11-18 10:53:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6152 states have (on average 1.303966189856957) internal successors, (8022), 6152 states have internal predecessors, (8022), 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) [2024-11-18 10:53:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8022 transitions. [2024-11-18 10:53:27,368 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8022 transitions. Word has length 167 [2024-11-18 10:53:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:27,369 INFO L471 AbstractCegarLoop]: Abstraction has 6153 states and 8022 transitions. [2024-11-18 10:53:27,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-18 10:53:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8022 transitions. [2024-11-18 10:53:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-18 10:53:27,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:27,372 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:27,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:53:27,373 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:27,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash -516019643, now seen corresponding path program 1 times [2024-11-18 10:53:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865579869] [2024-11-18 10:53:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:27,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865579869] [2024-11-18 10:53:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865579869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29158615] [2024-11-18 10:53:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:27,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:27,744 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) [2024-11-18 10:53:27,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:53:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:27,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:27,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:28,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29158615] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:28,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:28,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:53:28,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26912139] [2024-11-18 10:53:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:28,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:28,438 INFO L87 Difference]: Start difference. First operand 6153 states and 8022 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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) [2024-11-18 10:53:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:31,511 INFO L93 Difference]: Finished difference Result 19168 states and 25208 transitions. [2024-11-18 10:53:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2024-11-18 10:53:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:31,548 INFO L225 Difference]: With dead ends: 19168 [2024-11-18 10:53:31,548 INFO L226 Difference]: Without dead ends: 11736 [2024-11-18 10:53:31,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:31,557 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 836 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:31,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 156 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:53:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11736 states. [2024-11-18 10:53:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11736 to 11269. [2024-11-18 10:53:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.2258608448704296) internal successors, (13813), 11268 states have internal predecessors, (13813), 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) [2024-11-18 10:53:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13813 transitions. [2024-11-18 10:53:31,770 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13813 transitions. Word has length 233 [2024-11-18 10:53:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:31,771 INFO L471 AbstractCegarLoop]: Abstraction has 11269 states and 13813 transitions. [2024-11-18 10:53:31,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 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) [2024-11-18 10:53:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13813 transitions. [2024-11-18 10:53:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 10:53:31,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:31,775 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:31,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:53:31,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 10:53:31,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:31,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1780443001, now seen corresponding path program 1 times [2024-11-18 10:53:31,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:31,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401103267] [2024-11-18 10:53:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401103267] [2024-11-18 10:53:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401103267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61979642] [2024-11-18 10:53:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:32,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:32,152 INFO L87 Difference]: Start difference. First operand 11269 states and 13813 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-18 10:53:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:33,735 INFO L93 Difference]: Finished difference Result 28062 states and 34701 transitions. [2024-11-18 10:53:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:33,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 251 [2024-11-18 10:53:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:33,762 INFO L225 Difference]: With dead ends: 28062 [2024-11-18 10:53:33,762 INFO L226 Difference]: Without dead ends: 15067 [2024-11-18 10:53:33,774 INFO L431 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 [2024-11-18 10:53:33,775 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 530 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:33,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 683 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:53:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15067 states. [2024-11-18 10:53:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15067 to 15063. [2024-11-18 10:53:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15063 states, 15062 states have (on average 1.1957907316425442) internal successors, (18011), 15062 states have internal predecessors, (18011), 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) [2024-11-18 10:53:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 18011 transitions. [2024-11-18 10:53:33,970 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 18011 transitions. Word has length 251 [2024-11-18 10:53:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:33,971 INFO L471 AbstractCegarLoop]: Abstraction has 15063 states and 18011 transitions. [2024-11-18 10:53:33,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-18 10:53:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 18011 transitions. [2024-11-18 10:53:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-18 10:53:33,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:33,975 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:33,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:53:33,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:33,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash -989593744, now seen corresponding path program 1 times [2024-11-18 10:53:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:33,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282516844] [2024-11-18 10:53:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:33,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:53:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282516844] [2024-11-18 10:53:34,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282516844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:34,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:34,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173696303] [2024-11-18 10:53:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:34,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:34,190 INFO L87 Difference]: Start difference. First operand 15063 states and 18011 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-18 10:53:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:35,579 INFO L93 Difference]: Finished difference Result 35675 states and 42498 transitions. [2024-11-18 10:53:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 270 [2024-11-18 10:53:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:35,611 INFO L225 Difference]: With dead ends: 35675 [2024-11-18 10:53:35,611 INFO L226 Difference]: Without dead ends: 20189 [2024-11-18 10:53:35,626 INFO L431 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 [2024-11-18 10:53:35,627 INFO L432 NwaCegarLoop]: 782 mSDtfsCounter, 443 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:35,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 849 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:53:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2024-11-18 10:53:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 20181. [2024-11-18 10:53:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20181 states, 20180 states have (on average 1.1625867195242814) internal successors, (23461), 20180 states have internal predecessors, (23461), 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) [2024-11-18 10:53:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 23461 transitions. [2024-11-18 10:53:35,979 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 23461 transitions. Word has length 270 [2024-11-18 10:53:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:35,980 INFO L471 AbstractCegarLoop]: Abstraction has 20181 states and 23461 transitions. [2024-11-18 10:53:35,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-18 10:53:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 23461 transitions. [2024-11-18 10:53:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 10:53:35,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:35,992 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:35,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:53:35,992 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:35,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1508330796, now seen corresponding path program 1 times [2024-11-18 10:53:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:35,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970078921] [2024-11-18 10:53:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-18 10:53:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970078921] [2024-11-18 10:53:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970078921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574559953] [2024-11-18 10:53:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:36,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:36,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:36,131 INFO L87 Difference]: Start difference. First operand 20181 states and 23461 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-18 10:53:37,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:37,709 INFO L93 Difference]: Finished difference Result 45879 states and 53504 transitions. [2024-11-18 10:53:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:37,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 333 [2024-11-18 10:53:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:37,745 INFO L225 Difference]: With dead ends: 45879 [2024-11-18 10:53:37,745 INFO L226 Difference]: Without dead ends: 25699 [2024-11-18 10:53:37,764 INFO L431 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 [2024-11-18 10:53:37,766 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 449 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:37,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 366 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:53:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25699 states. [2024-11-18 10:53:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25699 to 20577. [2024-11-18 10:53:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20577 states, 20576 states have (on average 1.161110031104199) internal successors, (23891), 20576 states have internal predecessors, (23891), 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) [2024-11-18 10:53:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20577 states to 20577 states and 23891 transitions. [2024-11-18 10:53:38,081 INFO L78 Accepts]: Start accepts. Automaton has 20577 states and 23891 transitions. Word has length 333 [2024-11-18 10:53:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:38,081 INFO L471 AbstractCegarLoop]: Abstraction has 20577 states and 23891 transitions. [2024-11-18 10:53:38,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-18 10:53:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 20577 states and 23891 transitions. [2024-11-18 10:53:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-18 10:53:38,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:38,091 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:38,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:53:38,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:38,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2007043278, now seen corresponding path program 1 times [2024-11-18 10:53:38,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802199907] [2024-11-18 10:53:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 10:53:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802199907] [2024-11-18 10:53:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802199907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:38,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:38,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:38,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599786653] [2024-11-18 10:53:38,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:38,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:38,374 INFO L87 Difference]: Start difference. First operand 20577 states and 23891 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-18 10:53:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:39,841 INFO L93 Difference]: Finished difference Result 50935 states and 59227 transitions. [2024-11-18 10:53:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 371 [2024-11-18 10:53:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:39,883 INFO L225 Difference]: With dead ends: 50935 [2024-11-18 10:53:39,884 INFO L226 Difference]: Without dead ends: 28658 [2024-11-18 10:53:39,899 INFO L431 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 [2024-11-18 10:53:39,900 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 263 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:39,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 770 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:53:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28658 states. [2024-11-18 10:53:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28658 to 22692. [2024-11-18 10:53:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22692 states, 22691 states have (on average 1.14433035124058) internal successors, (25966), 22691 states have internal predecessors, (25966), 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) [2024-11-18 10:53:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22692 states to 22692 states and 25966 transitions. [2024-11-18 10:53:40,168 INFO L78 Accepts]: Start accepts. Automaton has 22692 states and 25966 transitions. Word has length 371 [2024-11-18 10:53:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:40,169 INFO L471 AbstractCegarLoop]: Abstraction has 22692 states and 25966 transitions. [2024-11-18 10:53:40,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-18 10:53:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 22692 states and 25966 transitions. [2024-11-18 10:53:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-18 10:53:40,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:40,176 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:53:40,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:53:40,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:40,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -600451555, now seen corresponding path program 1 times [2024-11-18 10:53:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783269275] [2024-11-18 10:53:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-18 10:53:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:40,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783269275] [2024-11-18 10:53:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783269275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:40,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:40,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006212044] [2024-11-18 10:53:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:40,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:40,471 INFO L87 Difference]: Start difference. First operand 22692 states and 25966 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-18 10:53:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:41,870 INFO L93 Difference]: Finished difference Result 50519 states and 57756 transitions. [2024-11-18 10:53:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 376 [2024-11-18 10:53:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:41,906 INFO L225 Difference]: With dead ends: 50519 [2024-11-18 10:53:41,906 INFO L226 Difference]: Without dead ends: 27829 [2024-11-18 10:53:41,923 INFO L431 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 [2024-11-18 10:53:41,924 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 496 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:41,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 144 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:53:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27829 states. [2024-11-18 10:53:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27829 to 21840. [2024-11-18 10:53:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21840 states, 21839 states have (on average 1.1478547552543614) internal successors, (25068), 21839 states have internal predecessors, (25068), 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) [2024-11-18 10:53:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21840 states to 21840 states and 25068 transitions. [2024-11-18 10:53:42,273 INFO L78 Accepts]: Start accepts. Automaton has 21840 states and 25068 transitions. Word has length 376 [2024-11-18 10:53:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:42,274 INFO L471 AbstractCegarLoop]: Abstraction has 21840 states and 25068 transitions. [2024-11-18 10:53:42,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-18 10:53:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 21840 states and 25068 transitions. [2024-11-18 10:53:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-18 10:53:42,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:42,279 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:42,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:53:42,280 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:42,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash -17425024, now seen corresponding path program 1 times [2024-11-18 10:53:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249758312] [2024-11-18 10:53:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 10:53:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:42,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249758312] [2024-11-18 10:53:42,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249758312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:42,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:42,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:42,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058281731] [2024-11-18 10:53:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:42,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:42,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:42,469 INFO L87 Difference]: Start difference. First operand 21840 states and 25068 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2024-11-18 10:53:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:43,634 INFO L93 Difference]: Finished difference Result 50899 states and 58681 transitions. [2024-11-18 10:53:43,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:43,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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 398 [2024-11-18 10:53:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:43,667 INFO L225 Difference]: With dead ends: 50899 [2024-11-18 10:53:43,667 INFO L226 Difference]: Without dead ends: 29061 [2024-11-18 10:53:43,684 INFO L431 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 [2024-11-18 10:53:43,685 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 303 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:43,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 764 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:53:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29061 states. [2024-11-18 10:53:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29061 to 28209. [2024-11-18 10:53:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28209 states, 28208 states have (on average 1.1263825865002837) internal successors, (31773), 28208 states have internal predecessors, (31773), 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) [2024-11-18 10:53:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28209 states to 28209 states and 31773 transitions. [2024-11-18 10:53:44,103 INFO L78 Accepts]: Start accepts. Automaton has 28209 states and 31773 transitions. Word has length 398 [2024-11-18 10:53:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:44,104 INFO L471 AbstractCegarLoop]: Abstraction has 28209 states and 31773 transitions. [2024-11-18 10:53:44,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2024-11-18 10:53:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 28209 states and 31773 transitions. [2024-11-18 10:53:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 10:53:44,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:44,115 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:44,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:53:44,116 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 106183693, now seen corresponding path program 1 times [2024-11-18 10:53:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861443211] [2024-11-18 10:53:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861443211] [2024-11-18 10:53:44,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861443211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953673332] [2024-11-18 10:53:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:44,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:44,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:44,694 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) [2024-11-18 10:53:44,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:53:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:44,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:44,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:45,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953673332] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:45,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:45,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:53:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532826405] [2024-11-18 10:53:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:45,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:45,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:45,620 INFO L87 Difference]: Start difference. First operand 28209 states and 31773 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2024-11-18 10:53:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:47,727 INFO L93 Difference]: Finished difference Result 70477 states and 78995 transitions. [2024-11-18 10:53:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:47,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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 444 [2024-11-18 10:53:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:47,777 INFO L225 Difference]: With dead ends: 70477 [2024-11-18 10:53:47,777 INFO L226 Difference]: Without dead ends: 40992 [2024-11-18 10:53:47,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:47,802 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 687 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:47,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 135 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:53:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40992 states. [2024-11-18 10:53:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40992 to 38864. [2024-11-18 10:53:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38864 states, 38863 states have (on average 1.1195738877595656) internal successors, (43510), 38863 states have internal predecessors, (43510), 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) [2024-11-18 10:53:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38864 states to 38864 states and 43510 transitions. [2024-11-18 10:53:48,184 INFO L78 Accepts]: Start accepts. Automaton has 38864 states and 43510 transitions. Word has length 444 [2024-11-18 10:53:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:48,185 INFO L471 AbstractCegarLoop]: Abstraction has 38864 states and 43510 transitions. [2024-11-18 10:53:48,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2024-11-18 10:53:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 38864 states and 43510 transitions. [2024-11-18 10:53:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 10:53:48,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:48,196 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:48,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:53:48,396 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,SelfDestructingSolverStorable12 [2024-11-18 10:53:48,397 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:48,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash 719908107, now seen corresponding path program 1 times [2024-11-18 10:53:48,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:48,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967458201] [2024-11-18 10:53:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-18 10:53:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967458201] [2024-11-18 10:53:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967458201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:48,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33800687] [2024-11-18 10:53:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:48,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:48,795 INFO L87 Difference]: Start difference. First operand 38864 states and 43510 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-18 10:53:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:50,122 INFO L93 Difference]: Finished difference Result 91353 states and 102481 transitions. [2024-11-18 10:53:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 487 [2024-11-18 10:53:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:50,183 INFO L225 Difference]: With dead ends: 91353 [2024-11-18 10:53:50,183 INFO L226 Difference]: Without dead ends: 52490 [2024-11-18 10:53:50,212 INFO L431 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 [2024-11-18 10:53:50,212 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 466 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:50,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 365 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:53:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52490 states. [2024-11-18 10:53:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52490 to 47801. [2024-11-18 10:53:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47801 states, 47800 states have (on average 1.1151673640167363) internal successors, (53305), 47800 states have internal predecessors, (53305), 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) [2024-11-18 10:53:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47801 states to 47801 states and 53305 transitions. [2024-11-18 10:53:50,791 INFO L78 Accepts]: Start accepts. Automaton has 47801 states and 53305 transitions. Word has length 487 [2024-11-18 10:53:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:50,792 INFO L471 AbstractCegarLoop]: Abstraction has 47801 states and 53305 transitions. [2024-11-18 10:53:50,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-18 10:53:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47801 states and 53305 transitions. [2024-11-18 10:53:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-18 10:53:50,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:50,803 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:50,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:53:50,804 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:50,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1160624918, now seen corresponding path program 1 times [2024-11-18 10:53:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337537100] [2024-11-18 10:53:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:50,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:53:51,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:51,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337537100] [2024-11-18 10:53:51,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337537100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:51,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475991277] [2024-11-18 10:53:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:51,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:51,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:51,286 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) [2024-11-18 10:53:51,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:53:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:51,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:53:51,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 177 proven. 73 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 10:53:51,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 10:53:51,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475991277] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:51,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:51,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-18 10:53:51,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502867022] [2024-11-18 10:53:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:51,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:53:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:53:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:53:51,836 INFO L87 Difference]: Start difference. First operand 47801 states and 53305 transitions. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 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) [2024-11-18 10:53:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:54,407 INFO L93 Difference]: Finished difference Result 110933 states and 123741 transitions. [2024-11-18 10:53:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:53:54,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 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 518 [2024-11-18 10:53:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:54,492 INFO L225 Difference]: With dead ends: 110933 [2024-11-18 10:53:54,492 INFO L226 Difference]: Without dead ends: 63134 [2024-11-18 10:53:54,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:53:54,533 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 858 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:54,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 162 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:53:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63134 states. [2024-11-18 10:53:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63134 to 60578. [2024-11-18 10:53:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60578 states, 60577 states have (on average 1.116265249186985) internal successors, (67620), 60577 states have internal predecessors, (67620), 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) [2024-11-18 10:53:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60578 states to 60578 states and 67620 transitions. [2024-11-18 10:53:55,401 INFO L78 Accepts]: Start accepts. Automaton has 60578 states and 67620 transitions. Word has length 518 [2024-11-18 10:53:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:55,402 INFO L471 AbstractCegarLoop]: Abstraction has 60578 states and 67620 transitions. [2024-11-18 10:53:55,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 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) [2024-11-18 10:53:55,402 INFO L276 IsEmpty]: Start isEmpty. Operand 60578 states and 67620 transitions. [2024-11-18 10:53:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-11-18 10:53:55,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:55,420 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:53:55,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:53:55,620 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 [2024-11-18 10:53:55,621 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:55,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1115520971, now seen corresponding path program 1 times [2024-11-18 10:53:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782753761] [2024-11-18 10:53:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:55,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-18 10:53:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782753761] [2024-11-18 10:53:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782753761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:56,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936288094] [2024-11-18 10:53:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:56,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:56,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:56,084 INFO L87 Difference]: Start difference. First operand 60578 states and 67620 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-18 10:53:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:53:57,703 INFO L93 Difference]: Finished difference Result 130507 states and 145611 transitions. [2024-11-18 10:53:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:53:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 613 [2024-11-18 10:53:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:53:57,789 INFO L225 Difference]: With dead ends: 130507 [2024-11-18 10:53:57,789 INFO L226 Difference]: Without dead ends: 67797 [2024-11-18 10:53:57,829 INFO L431 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 [2024-11-18 10:53:57,830 INFO L432 NwaCegarLoop]: 655 mSDtfsCounter, 490 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:53:57,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 697 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:53:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67797 states. [2024-11-18 10:53:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67797 to 66516. [2024-11-18 10:53:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66516 states, 66515 states have (on average 1.099977448695783) internal successors, (73165), 66515 states have internal predecessors, (73165), 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) [2024-11-18 10:53:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66516 states to 66516 states and 73165 transitions. [2024-11-18 10:53:58,812 INFO L78 Accepts]: Start accepts. Automaton has 66516 states and 73165 transitions. Word has length 613 [2024-11-18 10:53:58,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:58,812 INFO L471 AbstractCegarLoop]: Abstraction has 66516 states and 73165 transitions. [2024-11-18 10:53:58,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-18 10:53:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 66516 states and 73165 transitions. [2024-11-18 10:53:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-18 10:53:58,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:58,837 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:58,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:53:58,837 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:58,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 589457783, now seen corresponding path program 1 times [2024-11-18 10:53:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560864178] [2024-11-18 10:53:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-18 10:53:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560864178] [2024-11-18 10:53:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560864178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:53:59,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:53:59,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:53:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993384193] [2024-11-18 10:53:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:59,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:53:59,378 INFO L87 Difference]: Start difference. First operand 66516 states and 73165 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2024-11-18 10:54:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:00,956 INFO L93 Difference]: Finished difference Result 153078 states and 168371 transitions. [2024-11-18 10:54:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:00,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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 623 [2024-11-18 10:54:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:01,061 INFO L225 Difference]: With dead ends: 153078 [2024-11-18 10:54:01,061 INFO L226 Difference]: Without dead ends: 86564 [2024-11-18 10:54:01,107 INFO L431 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 [2024-11-18 10:54:01,107 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 428 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:01,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 596 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:54:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86564 states. [2024-11-18 10:54:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86564 to 82274. [2024-11-18 10:54:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82274 states, 82273 states have (on average 1.1007620969212257) internal successors, (90563), 82273 states have internal predecessors, (90563), 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) [2024-11-18 10:54:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82274 states to 82274 states and 90563 transitions. [2024-11-18 10:54:02,650 INFO L78 Accepts]: Start accepts. Automaton has 82274 states and 90563 transitions. Word has length 623 [2024-11-18 10:54:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:02,650 INFO L471 AbstractCegarLoop]: Abstraction has 82274 states and 90563 transitions. [2024-11-18 10:54:02,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2024-11-18 10:54:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 82274 states and 90563 transitions. [2024-11-18 10:54:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-18 10:54:02,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:02,689 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:02,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:54:02,689 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:02,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1024357676, now seen corresponding path program 1 times [2024-11-18 10:54:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505554404] [2024-11-18 10:54:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 10:54:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505554404] [2024-11-18 10:54:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505554404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926110596] [2024-11-18 10:54:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:03,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:03,105 INFO L87 Difference]: Start difference. First operand 82274 states and 90563 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2024-11-18 10:54:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:04,643 INFO L93 Difference]: Finished difference Result 184138 states and 202739 transitions. [2024-11-18 10:54:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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 624 [2024-11-18 10:54:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:04,771 INFO L225 Difference]: With dead ends: 184138 [2024-11-18 10:54:04,771 INFO L226 Difference]: Without dead ends: 99307 [2024-11-18 10:54:04,827 INFO L431 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 [2024-11-18 10:54:04,827 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 420 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:04,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 640 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:54:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99307 states. [2024-11-18 10:54:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99307 to 93346. [2024-11-18 10:54:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93346 states, 93345 states have (on average 1.0977663506347421) internal successors, (102471), 93345 states have internal predecessors, (102471), 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) [2024-11-18 10:54:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93346 states to 93346 states and 102471 transitions. [2024-11-18 10:54:06,498 INFO L78 Accepts]: Start accepts. Automaton has 93346 states and 102471 transitions. Word has length 624 [2024-11-18 10:54:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:06,499 INFO L471 AbstractCegarLoop]: Abstraction has 93346 states and 102471 transitions. [2024-11-18 10:54:06,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2024-11-18 10:54:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 93346 states and 102471 transitions. [2024-11-18 10:54:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-11-18 10:54:06,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:06,515 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:06,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:54:06,515 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:06,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1670815035, now seen corresponding path program 1 times [2024-11-18 10:54:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:06,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75717397] [2024-11-18 10:54:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 10:54:07,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75717397] [2024-11-18 10:54:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75717397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:07,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:07,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:54:07,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643402004] [2024-11-18 10:54:07,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:07,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:07,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:07,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:07,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:54:07,126 INFO L87 Difference]: Start difference. First operand 93346 states and 102471 transitions. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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) [2024-11-18 10:54:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:09,610 INFO L93 Difference]: Finished difference Result 214834 states and 235924 transitions. [2024-11-18 10:54:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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 628 [2024-11-18 10:54:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:09,770 INFO L225 Difference]: With dead ends: 214834 [2024-11-18 10:54:09,771 INFO L226 Difference]: Without dead ends: 121915 [2024-11-18 10:54:09,817 INFO L431 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 [2024-11-18 10:54:09,818 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 815 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:09,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 169 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:54:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121915 states. [2024-11-18 10:54:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121915 to 119780. [2024-11-18 10:54:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119780 states, 119779 states have (on average 1.0970704380567544) internal successors, (131406), 119779 states have internal predecessors, (131406), 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) [2024-11-18 10:54:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119780 states to 119780 states and 131406 transitions. [2024-11-18 10:54:11,555 INFO L78 Accepts]: Start accepts. Automaton has 119780 states and 131406 transitions. Word has length 628 [2024-11-18 10:54:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:11,556 INFO L471 AbstractCegarLoop]: Abstraction has 119780 states and 131406 transitions. [2024-11-18 10:54:11,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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) [2024-11-18 10:54:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 119780 states and 131406 transitions. [2024-11-18 10:54:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-18 10:54:11,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:11,572 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:11,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:54:11,572 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:11,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1726644073, now seen corresponding path program 1 times [2024-11-18 10:54:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113402488] [2024-11-18 10:54:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 375 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:54:13,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113402488] [2024-11-18 10:54:13,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113402488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:54:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348610550] [2024-11-18 10:54:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:13,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:54:13,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:54:13,058 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) [2024-11-18 10:54:13,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:54:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:13,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 10:54:13,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:54:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 375 proven. 82 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:54:14,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:54:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 456 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:54:14,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348610550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:54:14,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:54:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-18 10:54:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544904907] [2024-11-18 10:54:14,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:54:14,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:54:14,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:54:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:54:14,862 INFO L87 Difference]: Start difference. First operand 119780 states and 131406 transitions. Second operand has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 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) [2024-11-18 10:54:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:19,443 INFO L93 Difference]: Finished difference Result 254729 states and 279140 transitions. [2024-11-18 10:54:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 10:54:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 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 643 [2024-11-18 10:54:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:19,594 INFO L225 Difference]: With dead ends: 254729 [2024-11-18 10:54:19,594 INFO L226 Difference]: Without dead ends: 135376 [2024-11-18 10:54:19,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1281 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-18 10:54:19,633 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 3226 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 6531 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 7340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 6531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:19,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3226 Valid, 383 Invalid, 7340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 6531 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-18 10:54:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135376 states. [2024-11-18 10:54:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135376 to 120630. [2024-11-18 10:54:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120630 states, 120629 states have (on average 1.0943637102189356) internal successors, (132012), 120629 states have internal predecessors, (132012), 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) [2024-11-18 10:54:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120630 states to 120630 states and 132012 transitions. [2024-11-18 10:54:21,131 INFO L78 Accepts]: Start accepts. Automaton has 120630 states and 132012 transitions. Word has length 643 [2024-11-18 10:54:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:21,131 INFO L471 AbstractCegarLoop]: Abstraction has 120630 states and 132012 transitions. [2024-11-18 10:54:21,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.2) internal successors, (892), 9 states have internal predecessors, (892), 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) [2024-11-18 10:54:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 120630 states and 132012 transitions. [2024-11-18 10:54:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2024-11-18 10:54:21,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:21,147 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:21,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 10:54:21,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:54:21,347 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:21,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash -685287526, now seen corresponding path program 1 times [2024-11-18 10:54:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:21,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659978064] [2024-11-18 10:54:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:21,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-18 10:54:22,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:22,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659978064] [2024-11-18 10:54:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659978064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:22,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:54:22,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:54:22,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486381223] [2024-11-18 10:54:22,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:22,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:54:22,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:54:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:54:22,151 INFO L87 Difference]: Start difference. First operand 120630 states and 132012 transitions. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2024-11-18 10:54:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:24,016 INFO L93 Difference]: Finished difference Result 252321 states and 275932 transitions. [2024-11-18 10:54:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:54:24,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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 703 [2024-11-18 10:54:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:24,167 INFO L225 Difference]: With dead ends: 252321 [2024-11-18 10:54:24,167 INFO L226 Difference]: Without dead ends: 131693 [2024-11-18 10:54:24,218 INFO L431 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 [2024-11-18 10:54:24,219 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 396 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:24,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 306 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:54:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131693 states. [2024-11-18 10:54:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131693 to 127005. [2024-11-18 10:54:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127005 states, 127004 states have (on average 1.0903514849925986) internal successors, (138479), 127004 states have internal predecessors, (138479), 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) [2024-11-18 10:54:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127005 states to 127005 states and 138479 transitions. [2024-11-18 10:54:25,864 INFO L78 Accepts]: Start accepts. Automaton has 127005 states and 138479 transitions. Word has length 703 [2024-11-18 10:54:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:54:25,865 INFO L471 AbstractCegarLoop]: Abstraction has 127005 states and 138479 transitions. [2024-11-18 10:54:25,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 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) [2024-11-18 10:54:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 127005 states and 138479 transitions. [2024-11-18 10:54:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2024-11-18 10:54:25,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:54:25,883 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:54:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 10:54:25,884 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:54:25,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:54:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1562125047, now seen corresponding path program 1 times [2024-11-18 10:54:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:54:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44015654] [2024-11-18 10:54:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:54:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 728 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-18 10:54:27,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:54:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44015654] [2024-11-18 10:54:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44015654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:54:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609556715] [2024-11-18 10:54:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:54:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:54:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:54:27,354 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) [2024-11-18 10:54:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:54:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:54:27,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:54:27,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:54:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-18 10:54:27,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:54:27,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609556715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:54:27,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:54:27,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 10:54:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910389889] [2024-11-18 10:54:27,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:54:27,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:54:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:54:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:54:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:54:27,853 INFO L87 Difference]: Start difference. First operand 127005 states and 138479 transitions. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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) [2024-11-18 10:54:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:54:30,012 INFO L93 Difference]: Finished difference Result 256558 states and 279600 transitions. [2024-11-18 10:54:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:54:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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 729 [2024-11-18 10:54:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:54:30,165 INFO L225 Difference]: With dead ends: 256558 [2024-11-18 10:54:30,165 INFO L226 Difference]: Without dead ends: 129555 [2024-11-18 10:54:30,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:54:30,209 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 828 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:54:30,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 278 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:54:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129555 states.