./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label18.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/Problem03_label18.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 d08db41ae0d7ec8078cc06035e9e84ddb6f4cbeccb0dd0eb818a13f85c4c66c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:40:05,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:40:05,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:40:05,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:40:05,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:40:05,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:40:05,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:40:05,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:40:05,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:40:05,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:40:05,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:40:05,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:40:05,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:40:05,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:40:05,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:40:05,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:40:05,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:40:05,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:40:05,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:40:05,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:40:05,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:40:05,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:40:05,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:40:05,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:40:05,724 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:40:05,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:40:05,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:40:05,725 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:40:05,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:40:05,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:40:05,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:40:05,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:40:05,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:40:05,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:40:05,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:40:05,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:40:05,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:40:05,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:40:05,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:40:05,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:40:05,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:40:05,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:40:05,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d08db41ae0d7ec8078cc06035e9e84ddb6f4cbeccb0dd0eb818a13f85c4c66c1 [2024-11-18 09:40:05,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:40:05,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:40:05,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:40:05,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:40:05,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:40:05,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label18.c [2024-11-18 09:40:07,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:40:07,518 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:40:07,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label18.c [2024-11-18 09:40:07,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074e34085/4ff3316ab0ca4e8a9785b42bfd825ada/FLAG464b8fab9 [2024-11-18 09:40:07,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074e34085/4ff3316ab0ca4e8a9785b42bfd825ada [2024-11-18 09:40:07,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:40:07,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:40:07,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:40:07,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:40:07,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:40:07,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:07" (1/1) ... [2024-11-18 09:40:07,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fb002d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:07, skipping insertion in model container [2024-11-18 09:40:07,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:40:07" (1/1) ... [2024-11-18 09:40:07,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:40:08,081 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/Problem03_label18.c[61636,61649] [2024-11-18 09:40:08,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:40:08,114 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:40:08,288 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/Problem03_label18.c[61636,61649] [2024-11-18 09:40:08,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:40:08,314 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:40:08,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08 WrapperNode [2024-11-18 09:40:08,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:40:08,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:40:08,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:40:08,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:40:08,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,436 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-18 09:40:08,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:40:08,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:40:08,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:40:08,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:40:08,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,501 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 09:40:08,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:40:08,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:40:08,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:40:08,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:40:08,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (1/1) ... [2024-11-18 09:40:08,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:40:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:08,622 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 09:40:08,624 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 09:40:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:40:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:40:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:40:08,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:40:08,740 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:40:08,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:40:10,277 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-18 09:40:10,278 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:40:10,299 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:40:10,300 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 09:40:10,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:10 BoogieIcfgContainer [2024-11-18 09:40:10,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:40:10,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:40:10,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:40:10,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:40:10,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:40:07" (1/3) ... [2024-11-18 09:40:10,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f282ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:40:10, skipping insertion in model container [2024-11-18 09:40:10,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:40:08" (2/3) ... [2024-11-18 09:40:10,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f282ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:40:10, skipping insertion in model container [2024-11-18 09:40:10,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:40:10" (3/3) ... [2024-11-18 09:40:10,309 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18.c [2024-11-18 09:40:10,322 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:40:10,323 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:40:10,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:40:10,394 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;@33cdd508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:40:10,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:40:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 09:40:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 09:40:10,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:10,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:10,416 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:10,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2057722499, now seen corresponding path program 1 times [2024-11-18 09:40:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665138758] [2024-11-18 09:40:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:11,214 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 09:40:11,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665138758] [2024-11-18 09:40:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665138758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:11,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:11,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:11,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54425388] [2024-11-18 09:40:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:11,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:11,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:11,251 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 09:40:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:12,176 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-18 09:40:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 203 [2024-11-18 09:40:12,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:12,189 INFO L225 Difference]: With dead ends: 810 [2024-11-18 09:40:12,189 INFO L226 Difference]: Without dead ends: 444 [2024-11-18 09:40:12,192 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 09:40:12,195 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:12,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:40:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-18 09:40:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-18 09:40:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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 09:40:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-18 09:40:12,241 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 203 [2024-11-18 09:40:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:12,242 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-18 09:40:12,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 09:40:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-18 09:40:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-18 09:40:12,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:12,246 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 09:40:12,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:40:12,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:12,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1790864508, now seen corresponding path program 1 times [2024-11-18 09:40:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:12,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187112782] [2024-11-18 09:40:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:12,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:12,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187112782] [2024-11-18 09:40:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187112782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:12,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:12,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600560187] [2024-11-18 09:40:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:12,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:12,483 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 09:40:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:13,174 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-18 09:40:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 211 [2024-11-18 09:40:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:13,178 INFO L225 Difference]: With dead ends: 1312 [2024-11-18 09:40:13,178 INFO L226 Difference]: Without dead ends: 870 [2024-11-18 09:40:13,179 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 09:40:13,180 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:13,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-18 09:40:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-18 09:40:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3941520467836257) internal successors, (1192), 855 states have internal predecessors, (1192), 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 09:40:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1192 transitions. [2024-11-18 09:40:13,209 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1192 transitions. Word has length 211 [2024-11-18 09:40:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:13,210 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1192 transitions. [2024-11-18 09:40:13,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 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 09:40:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1192 transitions. [2024-11-18 09:40:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-18 09:40:13,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:13,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:13,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:40:13,216 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:13,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 551804157, now seen corresponding path program 1 times [2024-11-18 09:40:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049201679] [2024-11-18 09:40:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:13,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049201679] [2024-11-18 09:40:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049201679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:13,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664413962] [2024-11-18 09:40:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:13,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:13,509 INFO L87 Difference]: Start difference. First operand 856 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 09:40:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:14,150 INFO L93 Difference]: Finished difference Result 2121 states and 3056 transitions. [2024-11-18 09:40:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 223 [2024-11-18 09:40:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:14,154 INFO L225 Difference]: With dead ends: 2121 [2024-11-18 09:40:14,154 INFO L226 Difference]: Without dead ends: 1267 [2024-11-18 09:40:14,157 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 09:40:14,160 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 236 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:14,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 407 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2024-11-18 09:40:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2024-11-18 09:40:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.3291139240506329) internal successors, (1680), 1264 states have internal predecessors, (1680), 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 09:40:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1680 transitions. [2024-11-18 09:40:14,185 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1680 transitions. Word has length 223 [2024-11-18 09:40:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:14,185 INFO L471 AbstractCegarLoop]: Abstraction has 1265 states and 1680 transitions. [2024-11-18 09:40:14,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 09:40:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1680 transitions. [2024-11-18 09:40:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-18 09:40:14,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:14,188 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-11-18 09:40:14,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:40:14,189 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:14,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2004662289, now seen corresponding path program 1 times [2024-11-18 09:40:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:14,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582845312] [2024-11-18 09:40:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582845312] [2024-11-18 09:40:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582845312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123754099] [2024-11-18 09:40:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:14,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:14,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:14,534 INFO L87 Difference]: Start difference. First operand 1265 states and 1680 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 09:40:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:15,156 INFO L93 Difference]: Finished difference Result 3147 states and 4169 transitions. [2024-11-18 09:40:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 231 [2024-11-18 09:40:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:15,164 INFO L225 Difference]: With dead ends: 3147 [2024-11-18 09:40:15,165 INFO L226 Difference]: Without dead ends: 1884 [2024-11-18 09:40:15,167 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 09:40:15,167 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:15,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 366 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2024-11-18 09:40:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1877. [2024-11-18 09:40:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1876 states have (on average 1.273454157782516) internal successors, (2389), 1876 states have internal predecessors, (2389), 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 09:40:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2389 transitions. [2024-11-18 09:40:15,200 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2389 transitions. Word has length 231 [2024-11-18 09:40:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:15,200 INFO L471 AbstractCegarLoop]: Abstraction has 1877 states and 2389 transitions. [2024-11-18 09:40:15,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 09:40:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2389 transitions. [2024-11-18 09:40:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-18 09:40:15,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:15,205 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-11-18 09:40:15,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:40:15,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:15,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:15,206 INFO L85 PathProgramCache]: Analyzing trace with hash 338780757, now seen corresponding path program 1 times [2024-11-18 09:40:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:15,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990680013] [2024-11-18 09:40:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:15,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990680013] [2024-11-18 09:40:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990680013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:15,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:15,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996048744] [2024-11-18 09:40:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:15,464 INFO L87 Difference]: Start difference. First operand 1877 states and 2389 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) 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 09:40:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:16,121 INFO L93 Difference]: Finished difference Result 5386 states and 6889 transitions. [2024-11-18 09:40:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:16,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) 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 238 [2024-11-18 09:40:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:16,131 INFO L225 Difference]: With dead ends: 5386 [2024-11-18 09:40:16,131 INFO L226 Difference]: Without dead ends: 3511 [2024-11-18 09:40:16,134 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 09:40:16,134 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:16,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 388 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2024-11-18 09:40:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3507. [2024-11-18 09:40:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.2187678265830006) internal successors, (4273), 3506 states have internal predecessors, (4273), 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 09:40:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4273 transitions. [2024-11-18 09:40:16,185 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4273 transitions. Word has length 238 [2024-11-18 09:40:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:16,185 INFO L471 AbstractCegarLoop]: Abstraction has 3507 states and 4273 transitions. [2024-11-18 09:40:16,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) 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 09:40:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4273 transitions. [2024-11-18 09:40:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-18 09:40:16,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:16,192 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:16,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:40:16,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:16,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1822248298, now seen corresponding path program 1 times [2024-11-18 09:40:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375225364] [2024-11-18 09:40:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375225364] [2024-11-18 09:40:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375225364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:16,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258141390] [2024-11-18 09:40:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:16,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:16,500 INFO L87 Difference]: Start difference. First operand 3507 states and 4273 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 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 09:40:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:17,474 INFO L93 Difference]: Finished difference Result 7029 states and 8578 transitions. [2024-11-18 09:40:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 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 247 [2024-11-18 09:40:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:17,486 INFO L225 Difference]: With dead ends: 7029 [2024-11-18 09:40:17,487 INFO L226 Difference]: Without dead ends: 3524 [2024-11-18 09:40:17,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 09:40:17,490 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 438 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:17,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 191 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:40:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2024-11-18 09:40:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3101. [2024-11-18 09:40:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3100 states have (on average 1.2193548387096773) internal successors, (3780), 3100 states have internal predecessors, (3780), 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 09:40:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 3780 transitions. [2024-11-18 09:40:17,534 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 3780 transitions. Word has length 247 [2024-11-18 09:40:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:17,535 INFO L471 AbstractCegarLoop]: Abstraction has 3101 states and 3780 transitions. [2024-11-18 09:40:17,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 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 09:40:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 3780 transitions. [2024-11-18 09:40:17,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-18 09:40:17,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:17,540 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:17,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:40:17,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:17,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash -698467143, now seen corresponding path program 1 times [2024-11-18 09:40:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:17,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783565457] [2024-11-18 09:40:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:17,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:40:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783565457] [2024-11-18 09:40:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783565457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:17,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:17,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195105920] [2024-11-18 09:40:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:17,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:17,728 INFO L87 Difference]: Start difference. First operand 3101 states and 3780 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 09:40:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:18,376 INFO L93 Difference]: Finished difference Result 8057 states and 9768 transitions. [2024-11-18 09:40:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:18,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 09:40:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:18,388 INFO L225 Difference]: With dead ends: 8057 [2024-11-18 09:40:18,388 INFO L226 Difference]: Without dead ends: 4958 [2024-11-18 09:40:18,392 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 09:40:18,392 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 218 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:18,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 218 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2024-11-18 09:40:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4956. [2024-11-18 09:40:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 4955 states have (on average 1.205449041372351) internal successors, (5973), 4955 states have internal predecessors, (5973), 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 09:40:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 5973 transitions. [2024-11-18 09:40:18,453 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 5973 transitions. Word has length 251 [2024-11-18 09:40:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:18,453 INFO L471 AbstractCegarLoop]: Abstraction has 4956 states and 5973 transitions. [2024-11-18 09:40:18,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 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 09:40:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 5973 transitions. [2024-11-18 09:40:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 09:40:18,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:18,461 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:18,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 09:40:18,462 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:18,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1876414347, now seen corresponding path program 1 times [2024-11-18 09:40:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:18,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631620180] [2024-11-18 09:40:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:18,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 09:40:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631620180] [2024-11-18 09:40:18,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631620180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722328891] [2024-11-18 09:40:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:18,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:18,803 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 09:40:18,814 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 09:40:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:18,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:18,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 09:40:19,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722328891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480371302] [2024-11-18 09:40:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:19,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:19,217 INFO L87 Difference]: Start difference. First operand 4956 states and 5973 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 09:40:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:19,883 INFO L93 Difference]: Finished difference Result 14803 states and 17835 transitions. [2024-11-18 09:40:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:19,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 254 [2024-11-18 09:40:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:19,907 INFO L225 Difference]: With dead ends: 14803 [2024-11-18 09:40:19,907 INFO L226 Difference]: Without dead ends: 9849 [2024-11-18 09:40:19,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:19,914 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 53 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:19,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 199 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2024-11-18 09:40:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 9033. [2024-11-18 09:40:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9033 states, 9032 states have (on average 1.1854517271922056) internal successors, (10707), 9032 states have internal predecessors, (10707), 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 09:40:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9033 states to 9033 states and 10707 transitions. [2024-11-18 09:40:20,046 INFO L78 Accepts]: Start accepts. Automaton has 9033 states and 10707 transitions. Word has length 254 [2024-11-18 09:40:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:20,047 INFO L471 AbstractCegarLoop]: Abstraction has 9033 states and 10707 transitions. [2024-11-18 09:40:20,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 09:40:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9033 states and 10707 transitions. [2024-11-18 09:40:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 09:40:20,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:20,059 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:20,076 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 09:40:20,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:20,260 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:20,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:20,261 INFO L85 PathProgramCache]: Analyzing trace with hash 140629806, now seen corresponding path program 1 times [2024-11-18 09:40:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166729258] [2024-11-18 09:40:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 09:40:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166729258] [2024-11-18 09:40:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166729258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886578237] [2024-11-18 09:40:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:20,542 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 09:40:20,544 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 09:40:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:20,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:20,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 09:40:20,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886578237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:20,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:20,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-18 09:40:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704232559] [2024-11-18 09:40:20,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:20,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:20,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:20,770 INFO L87 Difference]: Start difference. First operand 9033 states and 10707 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 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 09:40:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:21,354 INFO L93 Difference]: Finished difference Result 26411 states and 31333 transitions. [2024-11-18 09:40:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 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 258 [2024-11-18 09:40:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:21,384 INFO L225 Difference]: With dead ends: 26411 [2024-11-18 09:40:21,384 INFO L226 Difference]: Without dead ends: 17380 [2024-11-18 09:40:21,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:21,395 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 233 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:21,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 208 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:40:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17380 states. [2024-11-18 09:40:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17380 to 17376. [2024-11-18 09:40:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 17375 states have (on average 1.1608057553956834) internal successors, (20169), 17375 states have internal predecessors, (20169), 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 09:40:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 20169 transitions. [2024-11-18 09:40:21,614 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 20169 transitions. Word has length 258 [2024-11-18 09:40:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:21,615 INFO L471 AbstractCegarLoop]: Abstraction has 17376 states and 20169 transitions. [2024-11-18 09:40:21,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 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 09:40:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 20169 transitions. [2024-11-18 09:40:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 09:40:21,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:21,638 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:21,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:40:21,838 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,SelfDestructingSolverStorable8 [2024-11-18 09:40:21,840 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:21,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -953150870, now seen corresponding path program 1 times [2024-11-18 09:40:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926320944] [2024-11-18 09:40:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 09:40:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926320944] [2024-11-18 09:40:22,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926320944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:22,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470324606] [2024-11-18 09:40:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:22,238 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 09:40:22,239 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 09:40:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:22,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:40:22,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 09:40:22,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470324606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:22,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:22,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-18 09:40:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946483519] [2024-11-18 09:40:22,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:22,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:22,443 INFO L87 Difference]: Start difference. First operand 17376 states and 20169 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 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 09:40:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:22,797 INFO L93 Difference]: Finished difference Result 34289 states and 39778 transitions. [2024-11-18 09:40:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 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 284 [2024-11-18 09:40:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:22,824 INFO L225 Difference]: With dead ends: 34289 [2024-11-18 09:40:22,824 INFO L226 Difference]: Without dead ends: 16915 [2024-11-18 09:40:22,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:22,895 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:22,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:40:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2024-11-18 09:40:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 16915. [2024-11-18 09:40:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 16914 states have (on average 1.147156201962871) internal successors, (19403), 16914 states have internal predecessors, (19403), 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 09:40:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 19403 transitions. [2024-11-18 09:40:23,109 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 19403 transitions. Word has length 284 [2024-11-18 09:40:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:23,109 INFO L471 AbstractCegarLoop]: Abstraction has 16915 states and 19403 transitions. [2024-11-18 09:40:23,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 2 states have internal predecessors, (238), 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 09:40:23,110 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 19403 transitions. [2024-11-18 09:40:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 09:40:23,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:23,136 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:23,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:40:23,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:23,337 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:23,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:23,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1815257485, now seen corresponding path program 1 times [2024-11-18 09:40:23,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:23,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834982914] [2024-11-18 09:40:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 09:40:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834982914] [2024-11-18 09:40:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834982914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:23,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851748211] [2024-11-18 09:40:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:23,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:23,565 INFO L87 Difference]: Start difference. First operand 16915 states and 19403 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 09:40:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:24,123 INFO L93 Difference]: Finished difference Result 39334 states and 45458 transitions. [2024-11-18 09:40:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 304 [2024-11-18 09:40:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:24,207 INFO L225 Difference]: With dead ends: 39334 [2024-11-18 09:40:24,207 INFO L226 Difference]: Without dead ends: 22421 [2024-11-18 09:40:24,214 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 09:40:24,215 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:24,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 166 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:40:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22421 states. [2024-11-18 09:40:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22421 to 21184. [2024-11-18 09:40:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21184 states, 21183 states have (on average 1.1619222961808997) internal successors, (24613), 21183 states have internal predecessors, (24613), 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 09:40:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21184 states to 21184 states and 24613 transitions. [2024-11-18 09:40:24,431 INFO L78 Accepts]: Start accepts. Automaton has 21184 states and 24613 transitions. Word has length 304 [2024-11-18 09:40:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:24,432 INFO L471 AbstractCegarLoop]: Abstraction has 21184 states and 24613 transitions. [2024-11-18 09:40:24,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 09:40:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 21184 states and 24613 transitions. [2024-11-18 09:40:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-18 09:40:24,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:24,455 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:24,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 09:40:24,455 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:24,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash 703296270, now seen corresponding path program 1 times [2024-11-18 09:40:24,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:24,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757074158] [2024-11-18 09:40:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:40:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:24,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757074158] [2024-11-18 09:40:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757074158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:24,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432328868] [2024-11-18 09:40:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:24,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:24,735 INFO L87 Difference]: Start difference. First operand 21184 states and 24613 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:25,409 INFO L93 Difference]: Finished difference Result 48671 states and 57104 transitions. [2024-11-18 09:40:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:25,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-11-18 09:40:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:25,439 INFO L225 Difference]: With dead ends: 48671 [2024-11-18 09:40:25,439 INFO L226 Difference]: Without dead ends: 26474 [2024-11-18 09:40:25,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 09:40:25,458 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 572 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:25,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 58 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:40:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26474 states. [2024-11-18 09:40:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26474 to 26472. [2024-11-18 09:40:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26472 states, 26471 states have (on average 1.1043405991462356) internal successors, (29233), 26471 states have internal predecessors, (29233), 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 09:40:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26472 states to 26472 states and 29233 transitions. [2024-11-18 09:40:25,791 INFO L78 Accepts]: Start accepts. Automaton has 26472 states and 29233 transitions. Word has length 317 [2024-11-18 09:40:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:25,792 INFO L471 AbstractCegarLoop]: Abstraction has 26472 states and 29233 transitions. [2024-11-18 09:40:25,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 26472 states and 29233 transitions. [2024-11-18 09:40:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-18 09:40:25,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:25,813 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:25,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 09:40:25,814 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:25,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1539344213, now seen corresponding path program 1 times [2024-11-18 09:40:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759304988] [2024-11-18 09:40:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 09:40:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:26,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759304988] [2024-11-18 09:40:26,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759304988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:26,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:26,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653913778] [2024-11-18 09:40:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:26,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:26,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:26,160 INFO L87 Difference]: Start difference. First operand 26472 states and 29233 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 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 09:40:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:27,017 INFO L93 Difference]: Finished difference Result 55399 states and 61131 transitions. [2024-11-18 09:40:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 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 331 [2024-11-18 09:40:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:27,049 INFO L225 Difference]: With dead ends: 55399 [2024-11-18 09:40:27,049 INFO L226 Difference]: Without dead ends: 28117 [2024-11-18 09:40:27,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:27,071 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 336 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:27,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 83 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:40:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28117 states. [2024-11-18 09:40:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28117 to 26675. [2024-11-18 09:40:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26675 states, 26674 states have (on average 1.1000599835045362) internal successors, (29343), 26674 states have internal predecessors, (29343), 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 09:40:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26675 states to 26675 states and 29343 transitions. [2024-11-18 09:40:27,424 INFO L78 Accepts]: Start accepts. Automaton has 26675 states and 29343 transitions. Word has length 331 [2024-11-18 09:40:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:27,424 INFO L471 AbstractCegarLoop]: Abstraction has 26675 states and 29343 transitions. [2024-11-18 09:40:27,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 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 09:40:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26675 states and 29343 transitions. [2024-11-18 09:40:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 09:40:27,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:27,449 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:27,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 09:40:27,450 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:27,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -421616427, now seen corresponding path program 1 times [2024-11-18 09:40:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54224897] [2024-11-18 09:40:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:40:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54224897] [2024-11-18 09:40:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54224897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:40:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067293198] [2024-11-18 09:40:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:27,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:27,774 INFO L87 Difference]: Start difference. First operand 26675 states and 29343 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 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 09:40:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:28,050 INFO L93 Difference]: Finished difference Result 78596 states and 86462 transitions. [2024-11-18 09:40:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:28,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 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 09:40:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:28,110 INFO L225 Difference]: With dead ends: 78596 [2024-11-18 09:40:28,110 INFO L226 Difference]: Without dead ends: 51923 [2024-11-18 09:40:28,137 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 09:40:28,137 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:28,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 474 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:40:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51923 states. [2024-11-18 09:40:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51923 to 51915. [2024-11-18 09:40:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51915 states, 51914 states have (on average 1.099510729283045) internal successors, (57080), 51914 states have internal predecessors, (57080), 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 09:40:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51915 states to 51915 states and 57080 transitions. [2024-11-18 09:40:28,757 INFO L78 Accepts]: Start accepts. Automaton has 51915 states and 57080 transitions. Word has length 333 [2024-11-18 09:40:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:28,757 INFO L471 AbstractCegarLoop]: Abstraction has 51915 states and 57080 transitions. [2024-11-18 09:40:28,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 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 09:40:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 51915 states and 57080 transitions. [2024-11-18 09:40:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-18 09:40:28,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:28,781 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:28,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 09:40:28,782 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:28,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1026939157, now seen corresponding path program 1 times [2024-11-18 09:40:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077346453] [2024-11-18 09:40:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:28,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 09:40:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077346453] [2024-11-18 09:40:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077346453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816881948] [2024-11-18 09:40:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:29,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:29,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:29,201 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 09:40:29,202 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 09:40:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:29,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:29,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:40:29,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816881948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476574208] [2024-11-18 09:40:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:29,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:29,533 INFO L87 Difference]: Start difference. First operand 51915 states and 57080 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 09:40:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:30,227 INFO L93 Difference]: Finished difference Result 103627 states and 113943 transitions. [2024-11-18 09:40:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:30,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 337 [2024-11-18 09:40:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:30,288 INFO L225 Difference]: With dead ends: 103627 [2024-11-18 09:40:30,288 INFO L226 Difference]: Without dead ends: 51714 [2024-11-18 09:40:30,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:30,323 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:30,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 85 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:40:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51714 states. [2024-11-18 09:40:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51714 to 50494. [2024-11-18 09:40:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50494 states, 50493 states have (on average 1.0889430218050027) internal successors, (54984), 50493 states have internal predecessors, (54984), 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 09:40:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50494 states to 50494 states and 54984 transitions. [2024-11-18 09:40:31,050 INFO L78 Accepts]: Start accepts. Automaton has 50494 states and 54984 transitions. Word has length 337 [2024-11-18 09:40:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:31,050 INFO L471 AbstractCegarLoop]: Abstraction has 50494 states and 54984 transitions. [2024-11-18 09:40:31,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 09:40:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 50494 states and 54984 transitions. [2024-11-18 09:40:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-18 09:40:31,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:31,073 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:31,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:40:31,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:40:31,274 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:31,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 496673634, now seen corresponding path program 1 times [2024-11-18 09:40:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:31,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176927961] [2024-11-18 09:40:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:31,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:31,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176927961] [2024-11-18 09:40:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176927961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:31,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295180749] [2024-11-18 09:40:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:31,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:31,584 INFO L87 Difference]: Start difference. First operand 50494 states and 54984 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 09:40:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:32,225 INFO L93 Difference]: Finished difference Result 95471 states and 103838 transitions. [2024-11-18 09:40:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:32,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 360 [2024-11-18 09:40:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:32,277 INFO L225 Difference]: With dead ends: 95471 [2024-11-18 09:40:32,277 INFO L226 Difference]: Without dead ends: 44979 [2024-11-18 09:40:32,295 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 09:40:32,295 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 176 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:32,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 312 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:40:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44979 states. [2024-11-18 09:40:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44979 to 43752. [2024-11-18 09:40:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43752 states, 43751 states have (on average 1.068798427464515) internal successors, (46761), 43751 states have internal predecessors, (46761), 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 09:40:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43752 states to 43752 states and 46761 transitions. [2024-11-18 09:40:32,811 INFO L78 Accepts]: Start accepts. Automaton has 43752 states and 46761 transitions. Word has length 360 [2024-11-18 09:40:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:32,811 INFO L471 AbstractCegarLoop]: Abstraction has 43752 states and 46761 transitions. [2024-11-18 09:40:32,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 09:40:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 43752 states and 46761 transitions. [2024-11-18 09:40:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-18 09:40:32,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:32,835 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:32,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 09:40:32,835 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 32721955, now seen corresponding path program 1 times [2024-11-18 09:40:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:32,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689544584] [2024-11-18 09:40:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 09:40:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689544584] [2024-11-18 09:40:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689544584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:33,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703459427] [2024-11-18 09:40:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:33,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:33,292 INFO L87 Difference]: Start difference. First operand 43752 states and 46761 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 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 09:40:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:34,011 INFO L93 Difference]: Finished difference Result 92604 states and 98864 transitions. [2024-11-18 09:40:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 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 390 [2024-11-18 09:40:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:34,065 INFO L225 Difference]: With dead ends: 92604 [2024-11-18 09:40:34,065 INFO L226 Difference]: Without dead ends: 48854 [2024-11-18 09:40:34,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 09:40:34,189 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 390 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:34,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 240 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:40:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48854 states. [2024-11-18 09:40:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48854 to 40502. [2024-11-18 09:40:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40502 states, 40501 states have (on average 1.063109552850547) internal successors, (43057), 40501 states have internal predecessors, (43057), 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 09:40:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40502 states to 40502 states and 43057 transitions. [2024-11-18 09:40:34,688 INFO L78 Accepts]: Start accepts. Automaton has 40502 states and 43057 transitions. Word has length 390 [2024-11-18 09:40:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:34,688 INFO L471 AbstractCegarLoop]: Abstraction has 40502 states and 43057 transitions. [2024-11-18 09:40:34,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 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 09:40:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 40502 states and 43057 transitions. [2024-11-18 09:40:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-18 09:40:34,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:34,713 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:34,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 09:40:34,714 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:34,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash -883760512, now seen corresponding path program 1 times [2024-11-18 09:40:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:34,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635293163] [2024-11-18 09:40:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:34,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-18 09:40:34,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635293163] [2024-11-18 09:40:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635293163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945855972] [2024-11-18 09:40:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:34,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:34,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:34,894 INFO L87 Difference]: Start difference. First operand 40502 states and 43057 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 09:40:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:35,511 INFO L93 Difference]: Finished difference Result 80397 states and 85471 transitions. [2024-11-18 09:40:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:35,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 438 [2024-11-18 09:40:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:35,549 INFO L225 Difference]: With dead ends: 80397 [2024-11-18 09:40:35,549 INFO L226 Difference]: Without dead ends: 38273 [2024-11-18 09:40:35,574 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 09:40:35,575 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 208 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:35,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 291 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:40:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38273 states. [2024-11-18 09:40:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38273 to 31363. [2024-11-18 09:40:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31363 states, 31362 states have (on average 1.0498373828199732) internal successors, (32925), 31362 states have internal predecessors, (32925), 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 09:40:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31363 states to 31363 states and 32925 transitions. [2024-11-18 09:40:36,235 INFO L78 Accepts]: Start accepts. Automaton has 31363 states and 32925 transitions. Word has length 438 [2024-11-18 09:40:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:36,236 INFO L471 AbstractCegarLoop]: Abstraction has 31363 states and 32925 transitions. [2024-11-18 09:40:36,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 09:40:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 31363 states and 32925 transitions. [2024-11-18 09:40:36,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-18 09:40:36,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:36,254 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 09:40:36,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 09:40:36,254 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:36,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash 680795419, now seen corresponding path program 1 times [2024-11-18 09:40:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:36,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402126771] [2024-11-18 09:40:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:36,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 449 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 09:40:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402126771] [2024-11-18 09:40:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402126771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576340477] [2024-11-18 09:40:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:36,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:36,870 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 09:40:36,871 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 09:40:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:37,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:37,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-18 09:40:37,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576340477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:37,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 09:40:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185319672] [2024-11-18 09:40:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:37,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:40:37,266 INFO L87 Difference]: Start difference. First operand 31363 states and 32925 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 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 09:40:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:37,595 INFO L93 Difference]: Finished difference Result 89602 states and 94077 transitions. [2024-11-18 09:40:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 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 472 [2024-11-18 09:40:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:37,662 INFO L225 Difference]: With dead ends: 89602 [2024-11-18 09:40:37,662 INFO L226 Difference]: Without dead ends: 58241 [2024-11-18 09:40:37,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:40:37,691 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 158 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:37,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 468 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:40:37,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58241 states. [2024-11-18 09:40:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58241 to 56201. [2024-11-18 09:40:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56201 states, 56200 states have (on average 1.049928825622776) internal successors, (59006), 56200 states have internal predecessors, (59006), 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 09:40:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56201 states to 56201 states and 59006 transitions. [2024-11-18 09:40:38,375 INFO L78 Accepts]: Start accepts. Automaton has 56201 states and 59006 transitions. Word has length 472 [2024-11-18 09:40:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:38,376 INFO L471 AbstractCegarLoop]: Abstraction has 56201 states and 59006 transitions. [2024-11-18 09:40:38,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 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 09:40:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 56201 states and 59006 transitions. [2024-11-18 09:40:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2024-11-18 09:40:38,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:38,396 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:40:38,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:40:38,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:38,597 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:38,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1531633206, now seen corresponding path program 1 times [2024-11-18 09:40:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:38,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877694761] [2024-11-18 09:40:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 09:40:39,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877694761] [2024-11-18 09:40:39,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877694761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:39,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:39,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:39,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247893559] [2024-11-18 09:40:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:39,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:40:39,206 INFO L87 Difference]: Start difference. First operand 56201 states and 59006 transitions. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 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 09:40:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:40,035 INFO L93 Difference]: Finished difference Result 109964 states and 115493 transitions. [2024-11-18 09:40:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 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 521 [2024-11-18 09:40:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:40,085 INFO L225 Difference]: With dead ends: 109964 [2024-11-18 09:40:40,085 INFO L226 Difference]: Without dead ends: 49498 [2024-11-18 09:40:40,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 09:40:40,106 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 277 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:40,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 370 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:40:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49498 states. [2024-11-18 09:40:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49498 to 47059. [2024-11-18 09:40:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47059 states, 47058 states have (on average 1.0515746525564198) internal successors, (49485), 47058 states have internal predecessors, (49485), 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 09:40:40,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47059 states to 47059 states and 49485 transitions. [2024-11-18 09:40:40,729 INFO L78 Accepts]: Start accepts. Automaton has 47059 states and 49485 transitions. Word has length 521 [2024-11-18 09:40:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:40,731 INFO L471 AbstractCegarLoop]: Abstraction has 47059 states and 49485 transitions. [2024-11-18 09:40:40,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 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 09:40:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 47059 states and 49485 transitions. [2024-11-18 09:40:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-18 09:40:40,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:40,760 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:40:40,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 09:40:40,761 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:40,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1563803765, now seen corresponding path program 1 times [2024-11-18 09:40:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219107522] [2024-11-18 09:40:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 549 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:40:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219107522] [2024-11-18 09:40:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219107522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552894275] [2024-11-18 09:40:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:41,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:41,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:41,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:40:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:41,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:40:41,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 678 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-18 09:40:41,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552894275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:41,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 09:40:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750658246] [2024-11-18 09:40:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:41,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:40:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:40:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:40:41,876 INFO L87 Difference]: Start difference. First operand 47059 states and 49485 transitions. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 09:40:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:42,761 INFO L93 Difference]: Finished difference Result 135888 states and 142856 transitions. [2024-11-18 09:40:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:40:42,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 561 [2024-11-18 09:40:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:42,859 INFO L225 Difference]: With dead ends: 135888 [2024-11-18 09:40:42,859 INFO L226 Difference]: Without dead ends: 88831 [2024-11-18 09:40:42,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:40:42,909 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 357 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:42,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 479 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:40:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88831 states. [2024-11-18 09:40:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88831 to 88202. [2024-11-18 09:40:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88202 states, 88201 states have (on average 1.0510198297071462) internal successors, (92701), 88201 states have internal predecessors, (92701), 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 09:40:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88202 states to 88202 states and 92701 transitions. [2024-11-18 09:40:44,056 INFO L78 Accepts]: Start accepts. Automaton has 88202 states and 92701 transitions. Word has length 561 [2024-11-18 09:40:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:44,056 INFO L471 AbstractCegarLoop]: Abstraction has 88202 states and 92701 transitions. [2024-11-18 09:40:44,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 09:40:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 88202 states and 92701 transitions. [2024-11-18 09:40:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2024-11-18 09:40:44,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:44,360 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:44,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:40:44,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:44,561 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:44,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:44,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1392133176, now seen corresponding path program 1 times [2024-11-18 09:40:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:44,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750732019] [2024-11-18 09:40:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2024-11-18 09:40:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750732019] [2024-11-18 09:40:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750732019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:45,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:40:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:40:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100979313] [2024-11-18 09:40:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:45,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:40:45,160 INFO L87 Difference]: Start difference. First operand 88202 states and 92701 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 09:40:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:45,839 INFO L93 Difference]: Finished difference Result 176433 states and 185438 transitions. [2024-11-18 09:40:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 632 [2024-11-18 09:40:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:45,925 INFO L225 Difference]: With dead ends: 176433 [2024-11-18 09:40:45,925 INFO L226 Difference]: Without dead ends: 88233 [2024-11-18 09:40:45,982 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 09:40:45,983 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 57 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:45,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 271 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:40:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88233 states. [2024-11-18 09:40:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88233 to 86577. [2024-11-18 09:40:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86577 states, 86576 states have (on average 1.0499099057475514) internal successors, (90897), 86576 states have internal predecessors, (90897), 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 09:40:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86577 states to 86577 states and 90897 transitions. [2024-11-18 09:40:47,231 INFO L78 Accepts]: Start accepts. Automaton has 86577 states and 90897 transitions. Word has length 632 [2024-11-18 09:40:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:47,232 INFO L471 AbstractCegarLoop]: Abstraction has 86577 states and 90897 transitions. [2024-11-18 09:40:47,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 09:40:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 86577 states and 90897 transitions. [2024-11-18 09:40:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2024-11-18 09:40:47,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:47,305 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 09:40:47,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 09:40:47,305 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:47,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1467292770, now seen corresponding path program 1 times [2024-11-18 09:40:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476605313] [2024-11-18 09:40:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1975 backedges. 298 proven. 6 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2024-11-18 09:40:48,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476605313] [2024-11-18 09:40:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476605313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886687951] [2024-11-18 09:40:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:48,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:48,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:48,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:48,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:40:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:48,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:48,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1975 backedges. 1479 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-18 09:40:49,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886687951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:49,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143856664] [2024-11-18 09:40:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:49,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:49,024 INFO L87 Difference]: Start difference. First operand 86577 states and 90897 transitions. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 09:40:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:49,591 INFO L93 Difference]: Finished difference Result 209450 states and 219964 transitions. [2024-11-18 09:40:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 784 [2024-11-18 09:40:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:49,727 INFO L225 Difference]: With dead ends: 209450 [2024-11-18 09:40:49,728 INFO L226 Difference]: Without dead ends: 122875 [2024-11-18 09:40:49,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:49,795 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 112 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:49,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 695 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:40:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122875 states. [2024-11-18 09:40:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122875 to 118815. [2024-11-18 09:40:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118815 states, 118814 states have (on average 1.0466022522598346) internal successors, (124351), 118814 states have internal predecessors, (124351), 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 09:40:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118815 states to 118815 states and 124351 transitions. [2024-11-18 09:40:51,500 INFO L78 Accepts]: Start accepts. Automaton has 118815 states and 124351 transitions. Word has length 784 [2024-11-18 09:40:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:51,500 INFO L471 AbstractCegarLoop]: Abstraction has 118815 states and 124351 transitions. [2024-11-18 09:40:51,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 09:40:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 118815 states and 124351 transitions. [2024-11-18 09:40:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-11-18 09:40:51,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:51,579 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 09:40:51,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:40:51,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:51,780 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:51,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1151805270, now seen corresponding path program 1 times [2024-11-18 09:40:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:51,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835359028] [2024-11-18 09:40:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2416 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 2055 trivial. 0 not checked. [2024-11-18 09:40:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:40:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835359028] [2024-11-18 09:40:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835359028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:40:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309104375] [2024-11-18 09:40:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:53,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:40:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:40:53,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:40:53,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:40:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:40:53,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:40:53,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:40:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2416 backedges. 1663 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2024-11-18 09:40:54,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:40:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309104375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:40:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:40:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:40:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941716889] [2024-11-18 09:40:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:40:54,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:40:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:40:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:40:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:54,127 INFO L87 Difference]: Start difference. First operand 118815 states and 124351 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:40:55,040 INFO L93 Difference]: Finished difference Result 310068 states and 324711 transitions. [2024-11-18 09:40:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:40:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 829 [2024-11-18 09:40:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:40:55,249 INFO L225 Difference]: With dead ends: 310068 [2024-11-18 09:40:55,249 INFO L226 Difference]: Without dead ends: 190849 [2024-11-18 09:40:55,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:40:55,329 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 187 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:40:55,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 704 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:40:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190849 states. [2024-11-18 09:40:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190849 to 174601. [2024-11-18 09:40:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174601 states, 174600 states have (on average 1.0455383734249715) internal successors, (182551), 174600 states have internal predecessors, (182551), 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 09:40:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174601 states to 174601 states and 182551 transitions. [2024-11-18 09:40:58,163 INFO L78 Accepts]: Start accepts. Automaton has 174601 states and 182551 transitions. Word has length 829 [2024-11-18 09:40:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:40:58,163 INFO L471 AbstractCegarLoop]: Abstraction has 174601 states and 182551 transitions. [2024-11-18 09:40:58,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:40:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 174601 states and 182551 transitions. [2024-11-18 09:40:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2024-11-18 09:40:58,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:40:58,303 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 09:40:58,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:40:58,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 09:40:58,504 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:40:58,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:40:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1252291571, now seen corresponding path program 1 times [2024-11-18 09:40:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:40:58,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425909198] [2024-11-18 09:40:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:40:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:40:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 399 proven. 6 refuted. 0 times theorem prover too weak. 2881 trivial. 0 not checked. [2024-11-18 09:41:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:41:00,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425909198] [2024-11-18 09:41:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425909198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:41:00,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51895930] [2024-11-18 09:41:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:41:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:41:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:41:00,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:41:00,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:41:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:41:00,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:41:00,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:41:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 1937 proven. 0 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2024-11-18 09:41:00,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:41:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51895930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:41:00,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:41:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 09:41:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897361080] [2024-11-18 09:41:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:41:00,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:41:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:41:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:41:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:00,522 INFO L87 Difference]: Start difference. First operand 174601 states and 182551 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 09:41:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:41:01,851 INFO L93 Difference]: Finished difference Result 371414 states and 388342 transitions. [2024-11-18 09:41:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:41:01,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 946 [2024-11-18 09:41:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:41:02,119 INFO L225 Difference]: With dead ends: 371414 [2024-11-18 09:41:02,119 INFO L226 Difference]: Without dead ends: 196815 [2024-11-18 09:41:02,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:41:02,175 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 203 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:41:02,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 313 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:41:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196815 states.