./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label15.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 9fbc20983083f465b3eede57a226cc56a0e48515578e64c31c2db7f869f449ac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:11:17,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:11:17,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:11:18,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:11:18,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:11:18,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:11:18,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:11:18,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:11:18,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:11:18,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:11:18,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:11:18,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:11:18,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:11:18,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:11:18,027 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:11:18,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:11:18,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:11:18,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:11:18,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:11:18,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:11:18,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:11:18,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:11:18,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:11:18,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:11:18,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:11:18,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:11:18,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:11:18,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:11:18,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:11:18,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:11:18,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:11:18,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:11:18,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:18,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:11:18,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:11:18,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:11:18,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:11:18,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:11:18,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:11:18,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:11:18,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:11:18,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:11:18,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fbc20983083f465b3eede57a226cc56a0e48515578e64c31c2db7f869f449ac [2024-10-23 21:11:18,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:11:18,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:11:18,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:11:18,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:11:18,299 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:11:18,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label15.c [2024-10-23 21:11:19,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:11:20,197 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:11:20,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label15.c [2024-10-23 21:11:20,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb528463e/627e00f7ab9843588bf3b5c10a135e15/FLAG8abdbb03c [2024-10-23 21:11:20,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb528463e/627e00f7ab9843588bf3b5c10a135e15 [2024-10-23 21:11:20,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:11:20,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:11:20,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:20,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:11:20,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:11:20,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:20" (1/1) ... [2024-10-23 21:11:20,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6ca53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:20, skipping insertion in model container [2024-10-23 21:11:20,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:20" (1/1) ... [2024-10-23 21:11:20,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:11:20,729 WARN L248 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/Problem13_label15.c[5297,5310] [2024-10-23 21:11:21,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:21,681 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:11:21,709 WARN L248 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/Problem13_label15.c[5297,5310] [2024-10-23 21:11:22,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:22,202 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:11:22,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22 WrapperNode [2024-10-23 21:11:22,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:22,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:22,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:11:22,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:11:22,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:22,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:22,820 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:11:22,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:22,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:11:22,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:11:22,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:11:22,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:22,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:22,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,214 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]. [2024-10-23 21:11:23,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:11:23,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:11:23,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:11:23,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:11:23,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (1/1) ... [2024-10-23 21:11:23,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:23,606 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) [2024-10-23 21:11:23,614 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 [2024-10-23 21:11:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:11:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:11:23,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:11:23,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:11:23,738 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:11:23,740 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:11:29,530 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:11:29,530 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:11:29,604 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:11:29,605 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:11:29,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:29 BoogieIcfgContainer [2024-10-23 21:11:29,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:11:29,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:11:29,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:11:29,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:11:29,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:20" (1/3) ... [2024-10-23 21:11:29,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7b5e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:29, skipping insertion in model container [2024-10-23 21:11:29,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:22" (2/3) ... [2024-10-23 21:11:29,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7b5e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:29, skipping insertion in model container [2024-10-23 21:11:29,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:29" (3/3) ... [2024-10-23 21:11:29,614 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15.c [2024-10-23 21:11:29,630 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:11:29,630 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:11:29,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:11:29,729 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;@21afe280, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:11:29,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:11:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-23 21:11:29,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:29,747 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] [2024-10-23 21:11:29,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:29,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:29,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1529089843, now seen corresponding path program 1 times [2024-10-23 21:11:29,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:29,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421222449] [2024-10-23 21:11:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:29,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:29,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421222449] [2024-10-23 21:11:29,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421222449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:29,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:29,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419415970] [2024-10-23 21:11:29,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:29,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:11:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:11:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:29,972 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:30,071 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:11:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:11:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-10-23 21:11:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:30,093 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:11:30,093 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:11:30,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:30,105 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:30,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:11:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:11:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:11:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:11:30,198 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 35 [2024-10-23 21:11:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:30,198 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:11:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:11:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-23 21:11:30,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:30,200 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] [2024-10-23 21:11:30,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:11:30,201 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:30,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash 618286059, now seen corresponding path program 1 times [2024-10-23 21:11:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958085578] [2024-10-23 21:11:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958085578] [2024-10-23 21:11:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958085578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:30,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134650940] [2024-10-23 21:11:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:30,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:30,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:30,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:30,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:30,387 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:34,634 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2024-10-23 21:11:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:34,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-10-23 21:11:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:34,645 INFO L225 Difference]: With dead ends: 3015 [2024-10-23 21:11:34,646 INFO L226 Difference]: Without dead ends: 1982 [2024-10-23 21:11:34,649 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 [2024-10-23 21:11:34,650 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 1019 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:34,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-23 21:11:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-23 21:11:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2024-10-23 21:11:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2024-10-23 21:11:34,698 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 35 [2024-10-23 21:11:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:34,698 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2024-10-23 21:11:34,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2024-10-23 21:11:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-23 21:11:34,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:34,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:34,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:11:34,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:34,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -219422559, now seen corresponding path program 1 times [2024-10-23 21:11:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796591269] [2024-10-23 21:11:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:35,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796591269] [2024-10-23 21:11:35,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796591269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:35,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907992609] [2024-10-23 21:11:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:35,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:35,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:35,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:35,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:35,013 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:38,378 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2024-10-23 21:11:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-10-23 21:11:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:38,393 INFO L225 Difference]: With dead ends: 5455 [2024-10-23 21:11:38,393 INFO L226 Difference]: Without dead ends: 3527 [2024-10-23 21:11:38,397 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 [2024-10-23 21:11:38,398 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:38,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:11:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-10-23 21:11:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2024-10-23 21:11:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2024-10-23 21:11:38,470 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 100 [2024-10-23 21:11:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:38,471 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2024-10-23 21:11:38,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2024-10-23 21:11:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-23 21:11:38,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:38,474 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:38,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:11:38,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:38,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1135333746, now seen corresponding path program 1 times [2024-10-23 21:11:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:38,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002566473] [2024-10-23 21:11:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:38,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002566473] [2024-10-23 21:11:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002566473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411404585] [2024-10-23 21:11:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:38,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:38,665 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:41,863 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2024-10-23 21:11:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:41,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-10-23 21:11:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:41,884 INFO L225 Difference]: With dead ends: 10231 [2024-10-23 21:11:41,885 INFO L226 Difference]: Without dead ends: 6707 [2024-10-23 21:11:41,891 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 [2024-10-23 21:11:41,892 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:41,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:11:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2024-10-23 21:11:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2024-10-23 21:11:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2024-10-23 21:11:42,047 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 106 [2024-10-23 21:11:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:42,049 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2024-10-23 21:11:42,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:42,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2024-10-23 21:11:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-23 21:11:42,055 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:42,055 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:42,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:11:42,056 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -73128569, now seen corresponding path program 1 times [2024-10-23 21:11:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:42,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274141048] [2024-10-23 21:11:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274141048] [2024-10-23 21:11:42,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274141048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:42,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321509637] [2024-10-23 21:11:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:42,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:42,323 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:45,845 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2024-10-23 21:11:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2024-10-23 21:11:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:45,984 INFO L225 Difference]: With dead ends: 17442 [2024-10-23 21:11:45,984 INFO L226 Difference]: Without dead ends: 10744 [2024-10-23 21:11:45,992 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 [2024-10-23 21:11:45,994 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:45,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-23 21:11:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2024-10-23 21:11:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2024-10-23 21:11:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2024-10-23 21:11:46,151 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 136 [2024-10-23 21:11:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:46,152 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2024-10-23 21:11:46,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2024-10-23 21:11:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-23 21:11:46,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:46,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:46,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:11:46,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:46,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:46,158 INFO L85 PathProgramCache]: Analyzing trace with hash 249104654, now seen corresponding path program 1 times [2024-10-23 21:11:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421363246] [2024-10-23 21:11:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421363246] [2024-10-23 21:11:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421363246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715797219] [2024-10-23 21:11:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:46,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:46,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:46,524 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:49,091 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2024-10-23 21:11:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2024-10-23 21:11:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:49,121 INFO L225 Difference]: With dead ends: 20548 [2024-10-23 21:11:49,121 INFO L226 Difference]: Without dead ends: 10668 [2024-10-23 21:11:49,134 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 [2024-10-23 21:11:49,134 INFO L432 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:49,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:11:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2024-10-23 21:11:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2024-10-23 21:11:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2024-10-23 21:11:49,287 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 146 [2024-10-23 21:11:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:49,288 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2024-10-23 21:11:49,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2024-10-23 21:11:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-23 21:11:49,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:49,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:49,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:11:49,291 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:49,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1504628644, now seen corresponding path program 1 times [2024-10-23 21:11:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093180874] [2024-10-23 21:11:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093180874] [2024-10-23 21:11:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093180874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:11:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085218332] [2024-10-23 21:11:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:49,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:49,904 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) [2024-10-23 21:11:49,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:11:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:49,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:11:50,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:11:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-23 21:11:50,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:11:50,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085218332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:50,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:11:50,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-23 21:11:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403879581] [2024-10-23 21:11:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:50,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:11:50,220 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:53,141 INFO L93 Difference]: Finished difference Result 30030 states and 41216 transitions. [2024-10-23 21:11:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 160 [2024-10-23 21:11:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:53,177 INFO L225 Difference]: With dead ends: 30030 [2024-10-23 21:11:53,177 INFO L226 Difference]: Without dead ends: 20150 [2024-10-23 21:11:53,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:11:53,193 INFO L432 NwaCegarLoop]: 1069 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:53,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1219 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:11:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2024-10-23 21:11:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 19336. [2024-10-23 21:11:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19336 states, 19335 states have (on average 1.2424618567364882) internal successors, (24023), 19335 states have internal predecessors, (24023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 24023 transitions. [2024-10-23 21:11:53,412 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 24023 transitions. Word has length 160 [2024-10-23 21:11:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:53,413 INFO L471 AbstractCegarLoop]: Abstraction has 19336 states and 24023 transitions. [2024-10-23 21:11:53,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 24023 transitions. [2024-10-23 21:11:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-10-23 21:11:53,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:53,416 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:11:53,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:11:53,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:11:53,621 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:53,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1810403888, now seen corresponding path program 1 times [2024-10-23 21:11:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623698353] [2024-10-23 21:11:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-23 21:11:53,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623698353] [2024-10-23 21:11:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623698353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:53,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:53,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:53,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586508356] [2024-10-23 21:11:53,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:53,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:53,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:53,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:53,938 INFO L87 Difference]: Start difference. First operand 19336 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:56,814 INFO L93 Difference]: Finished difference Result 44988 states and 55627 transitions. [2024-10-23 21:11:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:56,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-10-23 21:11:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:56,866 INFO L225 Difference]: With dead ends: 44988 [2024-10-23 21:11:56,866 INFO L226 Difference]: Without dead ends: 26440 [2024-10-23 21:11:56,889 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 [2024-10-23 21:11:56,891 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:56,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:11:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2024-10-23 21:11:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2024-10-23 21:11:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.2005901937046004) internal successors, (31734), 26432 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31734 transitions. [2024-10-23 21:11:57,310 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31734 transitions. Word has length 247 [2024-10-23 21:11:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:57,311 INFO L471 AbstractCegarLoop]: Abstraction has 26433 states and 31734 transitions. [2024-10-23 21:11:57,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:11:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31734 transitions. [2024-10-23 21:11:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-23 21:11:57,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:57,316 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:11:57,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:11:57,317 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:57,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1157637044, now seen corresponding path program 1 times [2024-10-23 21:11:57,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:57,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013624194] [2024-10-23 21:11:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:57,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013624194] [2024-10-23 21:11:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013624194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:11:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067484635] [2024-10-23 21:11:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:57,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:57,471 INFO L87 Difference]: Start difference. First operand 26433 states and 31734 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:00,599 INFO L93 Difference]: Finished difference Result 72534 states and 87970 transitions. [2024-10-23 21:12:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:00,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2024-10-23 21:12:00,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:00,667 INFO L225 Difference]: With dead ends: 72534 [2024-10-23 21:12:00,667 INFO L226 Difference]: Without dead ends: 46102 [2024-10-23 21:12:00,699 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 [2024-10-23 21:12:00,700 INFO L432 NwaCegarLoop]: 1846 mSDtfsCounter, 841 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:00,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1981 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:12:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46102 states. [2024-10-23 21:12:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46102 to 43732. [2024-10-23 21:12:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43732 states, 43731 states have (on average 1.1691248770894789) internal successors, (51127), 43731 states have internal predecessors, (51127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43732 states to 43732 states and 51127 transitions. [2024-10-23 21:12:01,149 INFO L78 Accepts]: Start accepts. Automaton has 43732 states and 51127 transitions. Word has length 249 [2024-10-23 21:12:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:01,150 INFO L471 AbstractCegarLoop]: Abstraction has 43732 states and 51127 transitions. [2024-10-23 21:12:01,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 43732 states and 51127 transitions. [2024-10-23 21:12:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-23 21:12:01,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:01,156 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:12:01,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:12:01,158 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:01,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2082244430, now seen corresponding path program 1 times [2024-10-23 21:12:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573632028] [2024-10-23 21:12:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573632028] [2024-10-23 21:12:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573632028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:01,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58619316] [2024-10-23 21:12:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:01,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:01,587 INFO L87 Difference]: Start difference. First operand 43732 states and 51127 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:05,133 INFO L93 Difference]: Finished difference Result 106363 states and 126457 transitions. [2024-10-23 21:12:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2024-10-23 21:12:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:05,205 INFO L225 Difference]: With dead ends: 106363 [2024-10-23 21:12:05,206 INFO L226 Difference]: Without dead ends: 63419 [2024-10-23 21:12:05,234 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 [2024-10-23 21:12:05,235 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 822 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:05,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 928 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:12:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63419 states. [2024-10-23 21:12:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63419 to 61047. [2024-10-23 21:12:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61047 states, 61046 states have (on average 1.1609605870982538) internal successors, (70872), 61046 states have internal predecessors, (70872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61047 states to 61047 states and 70872 transitions. [2024-10-23 21:12:06,036 INFO L78 Accepts]: Start accepts. Automaton has 61047 states and 70872 transitions. Word has length 262 [2024-10-23 21:12:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:06,037 INFO L471 AbstractCegarLoop]: Abstraction has 61047 states and 70872 transitions. [2024-10-23 21:12:06,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 61047 states and 70872 transitions. [2024-10-23 21:12:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-10-23 21:12:06,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:06,043 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:06,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:12:06,043 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:06,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1550948187, now seen corresponding path program 1 times [2024-10-23 21:12:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:06,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101329191] [2024-10-23 21:12:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 21:12:06,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:06,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101329191] [2024-10-23 21:12:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101329191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:06,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:06,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133010664] [2024-10-23 21:12:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:06,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:12:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:12:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:12:06,490 INFO L87 Difference]: Start difference. First operand 61047 states and 70872 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:12,838 INFO L93 Difference]: Finished difference Result 160081 states and 186749 transitions. [2024-10-23 21:12:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:12:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 323 [2024-10-23 21:12:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:12,957 INFO L225 Difference]: With dead ends: 160081 [2024-10-23 21:12:12,958 INFO L226 Difference]: Without dead ends: 99822 [2024-10-23 21:12:12,992 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 [2024-10-23 21:12:12,994 INFO L432 NwaCegarLoop]: 858 mSDtfsCounter, 1700 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6253 mSolverCounterSat, 995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 7248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 6253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:12,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1054 Invalid, 7248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [995 Valid, 6253 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-23 21:12:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99822 states. [2024-10-23 21:12:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99822 to 76802. [2024-10-23 21:12:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76802 states, 76801 states have (on average 1.1463783023658547) internal successors, (88043), 76801 states have internal predecessors, (88043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76802 states to 76802 states and 88043 transitions. [2024-10-23 21:12:13,963 INFO L78 Accepts]: Start accepts. Automaton has 76802 states and 88043 transitions. Word has length 323 [2024-10-23 21:12:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:13,963 INFO L471 AbstractCegarLoop]: Abstraction has 76802 states and 88043 transitions. [2024-10-23 21:12:13,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 76802 states and 88043 transitions. [2024-10-23 21:12:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-10-23 21:12:13,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:13,968 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, 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, 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] [2024-10-23 21:12:13,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:12:13,969 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:13,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1538923492, now seen corresponding path program 1 times [2024-10-23 21:12:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970801258] [2024-10-23 21:12:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 21:12:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970801258] [2024-10-23 21:12:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970801258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456533749] [2024-10-23 21:12:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:15,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:15,598 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) [2024-10-23 21:12:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:12:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:15,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:15,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:12:15,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:15,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456533749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:15,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:15,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564379820] [2024-10-23 21:12:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:15,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:15,823 INFO L87 Difference]: Start difference. First operand 76802 states and 88043 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:18,729 INFO L93 Difference]: Finished difference Result 152805 states and 175283 transitions. [2024-10-23 21:12:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 341 [2024-10-23 21:12:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:18,822 INFO L225 Difference]: With dead ends: 152805 [2024-10-23 21:12:18,823 INFO L226 Difference]: Without dead ends: 76791 [2024-10-23 21:12:18,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:18,860 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 1072 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:18,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 812 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:12:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2024-10-23 21:12:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76788. [2024-10-23 21:12:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76788 states, 76787 states have (on average 1.1087163191686094) internal successors, (85135), 76787 states have internal predecessors, (85135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76788 states to 76788 states and 85135 transitions. [2024-10-23 21:12:19,746 INFO L78 Accepts]: Start accepts. Automaton has 76788 states and 85135 transitions. Word has length 341 [2024-10-23 21:12:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:19,746 INFO L471 AbstractCegarLoop]: Abstraction has 76788 states and 85135 transitions. [2024-10-23 21:12:19,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 76788 states and 85135 transitions. [2024-10-23 21:12:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-23 21:12:19,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:19,752 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:19,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:12:19,952 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,SelfDestructingSolverStorable11 [2024-10-23 21:12:19,953 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:19,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1006701512, now seen corresponding path program 1 times [2024-10-23 21:12:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:19,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580174454] [2024-10-23 21:12:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 293 proven. 110 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 21:12:21,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580174454] [2024-10-23 21:12:21,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580174454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859518772] [2024-10-23 21:12:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:21,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:21,508 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) [2024-10-23 21:12:21,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:12:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:21,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:21,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-23 21:12:21,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859518772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120277947] [2024-10-23 21:12:21,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:21,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:21,804 INFO L87 Difference]: Start difference. First operand 76788 states and 85135 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:24,874 INFO L93 Difference]: Finished difference Result 153573 states and 170308 transitions. [2024-10-23 21:12:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 [2024-10-23 21:12:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:24,958 INFO L225 Difference]: With dead ends: 153573 [2024-10-23 21:12:24,958 INFO L226 Difference]: Without dead ends: 77573 [2024-10-23 21:12:24,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:24,976 INFO L432 NwaCegarLoop]: 1341 mSDtfsCounter, 1084 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:24,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1419 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:12:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77573 states. [2024-10-23 21:12:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77573 to 76785. [2024-10-23 21:12:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76785 states, 76784 states have (on average 1.0866196082517192) internal successors, (83435), 76784 states have internal predecessors, (83435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76785 states to 76785 states and 83435 transitions. [2024-10-23 21:12:25,714 INFO L78 Accepts]: Start accepts. Automaton has 76785 states and 83435 transitions. Word has length 390 [2024-10-23 21:12:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:25,715 INFO L471 AbstractCegarLoop]: Abstraction has 76785 states and 83435 transitions. [2024-10-23 21:12:25,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 76785 states and 83435 transitions. [2024-10-23 21:12:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-10-23 21:12:25,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:25,721 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:25,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:12:25,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:25,921 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:25,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1525120624, now seen corresponding path program 1 times [2024-10-23 21:12:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:25,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590773390] [2024-10-23 21:12:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:25,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:12:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590773390] [2024-10-23 21:12:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590773390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308694344] [2024-10-23 21:12:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:26,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:26,538 INFO L87 Difference]: Start difference. First operand 76785 states and 83435 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:30,245 INFO L93 Difference]: Finished difference Result 177190 states and 193903 transitions. [2024-10-23 21:12:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:30,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2024-10-23 21:12:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:30,368 INFO L225 Difference]: With dead ends: 177190 [2024-10-23 21:12:30,368 INFO L226 Difference]: Without dead ends: 101193 [2024-10-23 21:12:30,404 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 [2024-10-23 21:12:30,404 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 887 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:30,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 893 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:12:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101193 states. [2024-10-23 21:12:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101193 to 99601. [2024-10-23 21:12:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99601 states, 99600 states have (on average 1.0899096385542169) internal successors, (108555), 99600 states have internal predecessors, (108555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99601 states to 99601 states and 108555 transitions. [2024-10-23 21:12:31,743 INFO L78 Accepts]: Start accepts. Automaton has 99601 states and 108555 transitions. Word has length 391 [2024-10-23 21:12:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:31,747 INFO L471 AbstractCegarLoop]: Abstraction has 99601 states and 108555 transitions. [2024-10-23 21:12:31,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 99601 states and 108555 transitions. [2024-10-23 21:12:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-10-23 21:12:31,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:31,764 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:12:31,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:12:31,765 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:31,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1398796469, now seen corresponding path program 1 times [2024-10-23 21:12:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244272989] [2024-10-23 21:12:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 308 proven. 110 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 21:12:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244272989] [2024-10-23 21:12:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244272989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404753291] [2024-10-23 21:12:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:33,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:33,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:33,102 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) [2024-10-23 21:12:33,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:12:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:33,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:33,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:12:33,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404753291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:33,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013525676] [2024-10-23 21:12:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:33,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:33,509 INFO L87 Difference]: Start difference. First operand 99601 states and 108555 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)