./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/Problem03_label42.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/Problem03_label42.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 43b1e2ddb5478e4d8ee38477d15f5851a49b7cf223d0a089a3fdb9014fd7706f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:22:31,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:22:31,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:22:31,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:22:31,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:22:31,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:22:31,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:22:31,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:22:31,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:22:31,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:22:31,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:22:31,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:22:31,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:22:31,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:22:31,229 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:22:31,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:22:31,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:22:31,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:22:31,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:22:31,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:22:31,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:22:31,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:22:31,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:22:31,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:22:31,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:22:31,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:22:31,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:22:31,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:22:31,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:22:31,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:22:31,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:22:31,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:22:31,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:22:31,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:22:31,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:22:31,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:22:31,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:22:31,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:22:31,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:22:31,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:22:31,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:22:31,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:22:31,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b1e2ddb5478e4d8ee38477d15f5851a49b7cf223d0a089a3fdb9014fd7706f [2024-10-23 20:22:31,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:22:31,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:22:31,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:22:31,572 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:22:31,573 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:22:31,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label42.c [2024-10-23 20:22:32,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:22:33,303 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:22:33,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label42.c [2024-10-23 20:22:33,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad7f4493/735186b186db456ca777232e529e0f9f/FLAG99877f901 [2024-10-23 20:22:33,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad7f4493/735186b186db456ca777232e529e0f9f [2024-10-23 20:22:33,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:22:33,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:22:33,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:22:33,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:22:33,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:22:33,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:33" (1/1) ... [2024-10-23 20:22:33,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a49c419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:33, skipping insertion in model container [2024-10-23 20:22:33,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:22:33" (1/1) ... [2024-10-23 20:22:33,451 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:22:33,986 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/Problem03_label42.c[60691,60704] [2024-10-23 20:22:34,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:22:34,035 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:22:34,197 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/Problem03_label42.c[60691,60704] [2024-10-23 20:22:34,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:22:34,229 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:22:34,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34 WrapperNode [2024-10-23 20:22:34,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:22:34,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:22:34,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:22:34,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:22:34,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,397 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-23 20:22:34,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:22:34,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:22:34,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:22:34,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:22:34,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,479 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 20:22:34,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:22:34,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:22:34,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:22:34,584 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:22:34,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (1/1) ... [2024-10-23 20:22:34,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:22:34,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:34,619 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 20:22:34,622 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 20:22:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:22:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:22:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:22:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:22:34,756 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:22:34,758 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:22:36,474 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-23 20:22:36,474 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:22:36,565 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:22:36,566 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:22:36,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:36 BoogieIcfgContainer [2024-10-23 20:22:36,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:22:36,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:22:36,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:22:36,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:22:36,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:22:33" (1/3) ... [2024-10-23 20:22:36,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f112802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:36, skipping insertion in model container [2024-10-23 20:22:36,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:22:34" (2/3) ... [2024-10-23 20:22:36,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f112802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:22:36, skipping insertion in model container [2024-10-23 20:22:36,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:22:36" (3/3) ... [2024-10-23 20:22:36,576 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label42.c [2024-10-23 20:22:36,592 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:22:36,592 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:22:36,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:22:36,677 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;@358eb862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:22:36,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:22:36,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 20:22:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-23 20:22:36,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:36,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:36,699 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:36,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 173897473, now seen corresponding path program 1 times [2024-10-23 20:22:36,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146108339] [2024-10-23 20:22:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:37,304 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 20:22:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146108339] [2024-10-23 20:22:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146108339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:37,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995034279] [2024-10-23 20:22:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:37,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:22:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:22:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:22:37,349 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 20:22:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:37,401 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-23 20:22:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:22:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2024-10-23 20:22:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:37,413 INFO L225 Difference]: With dead ends: 479 [2024-10-23 20:22:37,413 INFO L226 Difference]: Without dead ends: 238 [2024-10-23 20:22:37,417 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 20:22:37,420 INFO L432 NwaCegarLoop]: 392 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, 392 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 20:22:37,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:22:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-23 20:22:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-23 20:22:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 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 20:22:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-23 20:22:37,483 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 195 [2024-10-23 20:22:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:37,484 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-23 20:22:37,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 20:22:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-23 20:22:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-23 20:22:37,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:37,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:37,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:22:37,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:37,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:37,489 INFO L85 PathProgramCache]: Analyzing trace with hash 313029743, now seen corresponding path program 1 times [2024-10-23 20:22:37,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:37,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936179238] [2024-10-23 20:22:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:38,127 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 20:22:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:38,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936179238] [2024-10-23 20:22:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936179238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:38,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942783278] [2024-10-23 20:22:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:38,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:38,139 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 20:22:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:39,099 INFO L93 Difference]: Finished difference Result 696 states and 1149 transitions. [2024-10-23 20:22:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:39,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2024-10-23 20:22:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:39,103 INFO L225 Difference]: With dead ends: 696 [2024-10-23 20:22:39,104 INFO L226 Difference]: Without dead ends: 459 [2024-10-23 20:22:39,105 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 20:22:39,106 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 68 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:39,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 137 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:22:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-23 20:22:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 458. [2024-10-23 20:22:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.5514223194748358) internal successors, (709), 457 states have internal predecessors, (709), 0 states have call successors, (0), 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 20:22:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 709 transitions. [2024-10-23 20:22:39,129 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 709 transitions. Word has length 195 [2024-10-23 20:22:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:39,130 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 709 transitions. [2024-10-23 20:22:39,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 20:22:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 709 transitions. [2024-10-23 20:22:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-10-23 20:22:39,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:39,134 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:39,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:22:39,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:39,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1017292123, now seen corresponding path program 1 times [2024-10-23 20:22:39,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037891969] [2024-10-23 20:22:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:39,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:39,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037891969] [2024-10-23 20:22:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037891969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:39,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:39,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170808304] [2024-10-23 20:22:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:39,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:39,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:39,393 INFO L87 Difference]: Start difference. First operand 458 states and 709 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 20:22:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:40,187 INFO L93 Difference]: Finished difference Result 1341 states and 2081 transitions. [2024-10-23 20:22:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2024-10-23 20:22:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:40,191 INFO L225 Difference]: With dead ends: 1341 [2024-10-23 20:22:40,191 INFO L226 Difference]: Without dead ends: 884 [2024-10-23 20:22:40,193 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 20:22:40,195 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:40,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 179 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:22:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-10-23 20:22:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 879. [2024-10-23 20:22:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.469248291571754) internal successors, (1290), 878 states have internal predecessors, (1290), 0 states have call successors, (0), 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 20:22:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1290 transitions. [2024-10-23 20:22:40,234 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1290 transitions. Word has length 200 [2024-10-23 20:22:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:40,234 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1290 transitions. [2024-10-23 20:22:40,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 20:22:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1290 transitions. [2024-10-23 20:22:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-10-23 20:22:40,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:40,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:40,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:22:40,240 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:40,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 78069134, now seen corresponding path program 1 times [2024-10-23 20:22:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:40,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524048573] [2024-10-23 20:22:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524048573] [2024-10-23 20:22:40,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524048573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:40,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:40,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117461093] [2024-10-23 20:22:40,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:40,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:40,438 INFO L87 Difference]: Start difference. First operand 879 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:41,253 INFO L93 Difference]: Finished difference Result 2593 states and 3821 transitions. [2024-10-23 20:22:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-10-23 20:22:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:41,259 INFO L225 Difference]: With dead ends: 2593 [2024-10-23 20:22:41,259 INFO L226 Difference]: Without dead ends: 1715 [2024-10-23 20:22:41,263 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 20:22:41,266 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:41,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:22:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-10-23 20:22:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1695. [2024-10-23 20:22:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.4386068476977567) internal successors, (2437), 1694 states have internal predecessors, (2437), 0 states have call successors, (0), 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 20:22:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2437 transitions. [2024-10-23 20:22:41,306 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2437 transitions. Word has length 203 [2024-10-23 20:22:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:41,307 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2437 transitions. [2024-10-23 20:22:41,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2437 transitions. [2024-10-23 20:22:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-23 20:22:41,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:41,313 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:41,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:22:41,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:41,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1653184181, now seen corresponding path program 1 times [2024-10-23 20:22:41,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533698705] [2024-10-23 20:22:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:41,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:22:41,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533698705] [2024-10-23 20:22:41,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533698705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:41,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:41,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:41,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590539169] [2024-10-23 20:22:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:41,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:41,673 INFO L87 Difference]: Start difference. First operand 1695 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 20:22:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:42,505 INFO L93 Difference]: Finished difference Result 5016 states and 7220 transitions. [2024-10-23 20:22:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:42,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 215 [2024-10-23 20:22:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:42,516 INFO L225 Difference]: With dead ends: 5016 [2024-10-23 20:22:42,516 INFO L226 Difference]: Without dead ends: 3322 [2024-10-23 20:22:42,519 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 20:22:42,520 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 234 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:42,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 409 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:22:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2024-10-23 20:22:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3319. [2024-10-23 20:22:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3318 states have (on average 1.2848101265822784) internal successors, (4263), 3318 states have internal predecessors, (4263), 0 states have call successors, (0), 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 20:22:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4263 transitions. [2024-10-23 20:22:42,576 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4263 transitions. Word has length 215 [2024-10-23 20:22:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:42,577 INFO L471 AbstractCegarLoop]: Abstraction has 3319 states and 4263 transitions. [2024-10-23 20:22:42,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 20:22:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4263 transitions. [2024-10-23 20:22:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-23 20:22:42,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:42,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:42,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:22:42,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:42,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 965395203, now seen corresponding path program 1 times [2024-10-23 20:22:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90467442] [2024-10-23 20:22:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:22:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90467442] [2024-10-23 20:22:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90467442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801143382] [2024-10-23 20:22:42,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:42,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:42,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:42,945 INFO L87 Difference]: Start difference. First operand 3319 states and 4263 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 20:22:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:43,862 INFO L93 Difference]: Finished difference Result 9899 states and 12716 transitions. [2024-10-23 20:22:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 230 [2024-10-23 20:22:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:43,888 INFO L225 Difference]: With dead ends: 9899 [2024-10-23 20:22:43,888 INFO L226 Difference]: Without dead ends: 6581 [2024-10-23 20:22:43,894 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 20:22:43,897 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:43,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 415 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:22:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2024-10-23 20:22:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6576. [2024-10-23 20:22:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6575 states have (on average 1.224486692015209) internal successors, (8051), 6575 states have internal predecessors, (8051), 0 states have call successors, (0), 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 20:22:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 8051 transitions. [2024-10-23 20:22:44,024 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 8051 transitions. Word has length 230 [2024-10-23 20:22:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:44,027 INFO L471 AbstractCegarLoop]: Abstraction has 6576 states and 8051 transitions. [2024-10-23 20:22:44,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 20:22:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 8051 transitions. [2024-10-23 20:22:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-23 20:22:44,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:44,039 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:44,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:22:44,040 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:44,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1431313764, now seen corresponding path program 1 times [2024-10-23 20:22:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:44,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383767211] [2024-10-23 20:22:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383767211] [2024-10-23 20:22:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383767211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:44,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:44,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251546924] [2024-10-23 20:22:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:44,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:44,575 INFO L87 Difference]: Start difference. First operand 6576 states and 8051 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:45,555 INFO L93 Difference]: Finished difference Result 16026 states and 19626 transitions. [2024-10-23 20:22:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:45,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-10-23 20:22:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:45,584 INFO L225 Difference]: With dead ends: 16026 [2024-10-23 20:22:45,584 INFO L226 Difference]: Without dead ends: 9451 [2024-10-23 20:22:45,594 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 20:22:45,595 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:45,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 192 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:22:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9451 states. [2024-10-23 20:22:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9451 to 9438. [2024-10-23 20:22:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9438 states, 9437 states have (on average 1.2135212461587368) internal successors, (11452), 9437 states have internal predecessors, (11452), 0 states have call successors, (0), 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 20:22:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9438 states to 9438 states and 11452 transitions. [2024-10-23 20:22:45,789 INFO L78 Accepts]: Start accepts. Automaton has 9438 states and 11452 transitions. Word has length 236 [2024-10-23 20:22:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:45,789 INFO L471 AbstractCegarLoop]: Abstraction has 9438 states and 11452 transitions. [2024-10-23 20:22:45,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9438 states and 11452 transitions. [2024-10-23 20:22:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-23 20:22:45,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:45,806 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:45,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:22:45,807 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:45,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash -344880461, now seen corresponding path program 1 times [2024-10-23 20:22:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:45,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554475228] [2024-10-23 20:22:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:45,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554475228] [2024-10-23 20:22:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554475228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:22:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86352242] [2024-10-23 20:22:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:46,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:46,412 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 20:22:46,414 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 20:22:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:46,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:22:46,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:22:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:22:46,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:22:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86352242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:22:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:22:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296649483] [2024-10-23 20:22:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:46,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:46,886 INFO L87 Difference]: Start difference. First operand 9438 states and 11452 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:47,702 INFO L93 Difference]: Finished difference Result 18668 states and 22624 transitions. [2024-10-23 20:22:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-10-23 20:22:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:47,732 INFO L225 Difference]: With dead ends: 18668 [2024-10-23 20:22:47,733 INFO L226 Difference]: Without dead ends: 9231 [2024-10-23 20:22:47,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:47,745 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 82 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:47,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 376 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:22:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9231 states. [2024-10-23 20:22:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 9228. [2024-10-23 20:22:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 1.1769806004118348) internal successors, (10860), 9227 states have internal predecessors, (10860), 0 states have call successors, (0), 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 20:22:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 10860 transitions. [2024-10-23 20:22:47,906 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 10860 transitions. Word has length 243 [2024-10-23 20:22:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:47,907 INFO L471 AbstractCegarLoop]: Abstraction has 9228 states and 10860 transitions. [2024-10-23 20:22:47,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 10860 transitions. [2024-10-23 20:22:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-23 20:22:47,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:47,923 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:47,941 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 20:22:48,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:48,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:48,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:48,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1454767301, now seen corresponding path program 1 times [2024-10-23 20:22:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107540286] [2024-10-23 20:22:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-23 20:22:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107540286] [2024-10-23 20:22:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107540286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773788306] [2024-10-23 20:22:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:48,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:48,507 INFO L87 Difference]: Start difference. First operand 9228 states and 10860 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 20:22:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:49,346 INFO L93 Difference]: Finished difference Result 21111 states and 24970 transitions. [2024-10-23 20:22:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:49,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 243 [2024-10-23 20:22:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:49,368 INFO L225 Difference]: With dead ends: 21111 [2024-10-23 20:22:49,369 INFO L226 Difference]: Without dead ends: 11884 [2024-10-23 20:22:49,381 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 20:22:49,381 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:49,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 414 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:22:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2024-10-23 20:22:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 11867. [2024-10-23 20:22:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11867 states, 11866 states have (on average 1.1538007753244564) internal successors, (13691), 11866 states have internal predecessors, (13691), 0 states have call successors, (0), 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 20:22:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11867 states to 11867 states and 13691 transitions. [2024-10-23 20:22:49,619 INFO L78 Accepts]: Start accepts. Automaton has 11867 states and 13691 transitions. Word has length 243 [2024-10-23 20:22:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:49,620 INFO L471 AbstractCegarLoop]: Abstraction has 11867 states and 13691 transitions. [2024-10-23 20:22:49,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 20:22:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11867 states and 13691 transitions. [2024-10-23 20:22:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-23 20:22:49,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:49,645 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:49,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 20:22:49,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:49,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash -605536390, now seen corresponding path program 1 times [2024-10-23 20:22:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801829669] [2024-10-23 20:22:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:50,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801829669] [2024-10-23 20:22:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801829669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:50,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:50,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037278287] [2024-10-23 20:22:50,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:50,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:50,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:50,282 INFO L87 Difference]: Start difference. First operand 11867 states and 13691 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 20:22:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:51,146 INFO L93 Difference]: Finished difference Result 27201 states and 31291 transitions. [2024-10-23 20:22:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2024-10-23 20:22:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:51,175 INFO L225 Difference]: With dead ends: 27201 [2024-10-23 20:22:51,175 INFO L226 Difference]: Without dead ends: 15538 [2024-10-23 20:22:51,189 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 20:22:51,190 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 183 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:51,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 192 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:22:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15538 states. [2024-10-23 20:22:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15538 to 15530. [2024-10-23 20:22:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 1.1405113014360229) internal successors, (17711), 15529 states have internal predecessors, (17711), 0 states have call successors, (0), 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 20:22:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 17711 transitions. [2024-10-23 20:22:51,393 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 17711 transitions. Word has length 250 [2024-10-23 20:22:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:51,393 INFO L471 AbstractCegarLoop]: Abstraction has 15530 states and 17711 transitions. [2024-10-23 20:22:51,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 20:22:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 17711 transitions. [2024-10-23 20:22:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-10-23 20:22:51,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:51,415 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:51,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 20:22:51,416 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:51,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1972623027, now seen corresponding path program 1 times [2024-10-23 20:22:51,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:51,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952341109] [2024-10-23 20:22:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:51,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:22:51,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:51,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952341109] [2024-10-23 20:22:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952341109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454624934] [2024-10-23 20:22:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:51,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:51,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:51,639 INFO L87 Difference]: Start difference. First operand 15530 states and 17711 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 20:22:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:52,060 INFO L93 Difference]: Finished difference Result 27358 states and 31323 transitions. [2024-10-23 20:22:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 256 [2024-10-23 20:22:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:52,086 INFO L225 Difference]: With dead ends: 27358 [2024-10-23 20:22:52,086 INFO L226 Difference]: Without dead ends: 14881 [2024-10-23 20:22:52,102 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 20:22:52,103 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:52,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 29 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:22:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14881 states. [2024-10-23 20:22:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14881 to 14881. [2024-10-23 20:22:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14881 states, 14880 states have (on average 1.1299059139784946) internal successors, (16813), 14880 states have internal predecessors, (16813), 0 states have call successors, (0), 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 20:22:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14881 states to 14881 states and 16813 transitions. [2024-10-23 20:22:52,279 INFO L78 Accepts]: Start accepts. Automaton has 14881 states and 16813 transitions. Word has length 256 [2024-10-23 20:22:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:52,279 INFO L471 AbstractCegarLoop]: Abstraction has 14881 states and 16813 transitions. [2024-10-23 20:22:52,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 20:22:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 14881 states and 16813 transitions. [2024-10-23 20:22:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-10-23 20:22:52,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:52,299 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:52,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 20:22:52,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:52,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -885213559, now seen corresponding path program 1 times [2024-10-23 20:22:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:52,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916510891] [2024-10-23 20:22:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916510891] [2024-10-23 20:22:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916510891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:52,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:52,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:52,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257275826] [2024-10-23 20:22:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:52,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:52,694 INFO L87 Difference]: Start difference. First operand 14881 states and 16813 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:53,455 INFO L93 Difference]: Finished difference Result 30366 states and 34488 transitions. [2024-10-23 20:22:53,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:53,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-10-23 20:22:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:53,482 INFO L225 Difference]: With dead ends: 30366 [2024-10-23 20:22:53,482 INFO L226 Difference]: Without dead ends: 18538 [2024-10-23 20:22:53,498 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 20:22:53,499 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 164 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:53,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 110 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:22:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18538 states. [2024-10-23 20:22:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18538 to 18332. [2024-10-23 20:22:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18332 states, 18331 states have (on average 1.128580001091048) internal successors, (20688), 18331 states have internal predecessors, (20688), 0 states have call successors, (0), 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 20:22:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18332 states to 18332 states and 20688 transitions. [2024-10-23 20:22:53,844 INFO L78 Accepts]: Start accepts. Automaton has 18332 states and 20688 transitions. Word has length 257 [2024-10-23 20:22:53,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:53,844 INFO L471 AbstractCegarLoop]: Abstraction has 18332 states and 20688 transitions. [2024-10-23 20:22:53,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:22:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18332 states and 20688 transitions. [2024-10-23 20:22:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-10-23 20:22:53,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:53,871 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:53,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 20:22:53,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:53,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash 39683603, now seen corresponding path program 1 times [2024-10-23 20:22:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010748623] [2024-10-23 20:22:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:54,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:54,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010748623] [2024-10-23 20:22:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010748623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619908938] [2024-10-23 20:22:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:54,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:54,196 INFO L87 Difference]: Start difference. First operand 18332 states and 20688 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 20:22:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:54,998 INFO L93 Difference]: Finished difference Result 39501 states and 45009 transitions. [2024-10-23 20:22:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:54,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 285 [2024-10-23 20:22:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:55,027 INFO L225 Difference]: With dead ends: 39501 [2024-10-23 20:22:55,027 INFO L226 Difference]: Without dead ends: 21576 [2024-10-23 20:22:55,045 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 20:22:55,046 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 133 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:55,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 135 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:22:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21576 states. [2024-10-23 20:22:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21576 to 20355. [2024-10-23 20:22:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20355 states, 20354 states have (on average 1.1121155546821264) internal successors, (22636), 20354 states have internal predecessors, (22636), 0 states have call successors, (0), 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 20:22:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20355 states to 20355 states and 22636 transitions. [2024-10-23 20:22:55,409 INFO L78 Accepts]: Start accepts. Automaton has 20355 states and 22636 transitions. Word has length 285 [2024-10-23 20:22:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:55,410 INFO L471 AbstractCegarLoop]: Abstraction has 20355 states and 22636 transitions. [2024-10-23 20:22:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 20:22:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20355 states and 22636 transitions. [2024-10-23 20:22:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-10-23 20:22:55,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:55,431 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:55,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 20:22:55,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:55,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2127988335, now seen corresponding path program 1 times [2024-10-23 20:22:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211692951] [2024-10-23 20:22:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 20:22:55,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:55,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211692951] [2024-10-23 20:22:55,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211692951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:55,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:55,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:22:55,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701213446] [2024-10-23 20:22:55,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:55,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:22:55,798 INFO L87 Difference]: Start difference. First operand 20355 states and 22636 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 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 20:22:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:56,522 INFO L93 Difference]: Finished difference Result 44987 states and 50336 transitions. [2024-10-23 20:22:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:56,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 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 325 [2024-10-23 20:22:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:56,544 INFO L225 Difference]: With dead ends: 44987 [2024-10-23 20:22:56,544 INFO L226 Difference]: Without dead ends: 26054 [2024-10-23 20:22:56,550 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 20:22:56,551 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 158 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:56,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 143 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:22:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26054 states. [2024-10-23 20:22:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26054 to 23406. [2024-10-23 20:22:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23406 states, 23405 states have (on average 1.121555223242897) internal successors, (26250), 23405 states have internal predecessors, (26250), 0 states have call successors, (0), 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 20:22:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23406 states to 23406 states and 26250 transitions. [2024-10-23 20:22:56,803 INFO L78 Accepts]: Start accepts. Automaton has 23406 states and 26250 transitions. Word has length 325 [2024-10-23 20:22:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:56,804 INFO L471 AbstractCegarLoop]: Abstraction has 23406 states and 26250 transitions. [2024-10-23 20:22:56,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 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 20:22:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 23406 states and 26250 transitions. [2024-10-23 20:22:56,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-10-23 20:22:56,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:56,825 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:56,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 20:22:56,825 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:56,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1672159855, now seen corresponding path program 1 times [2024-10-23 20:22:56,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:56,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649712108] [2024-10-23 20:22:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:56,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 138 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 20:22:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649712108] [2024-10-23 20:22:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649712108] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:22:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538781192] [2024-10-23 20:22:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:58,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:58,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:58,299 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 20:22:58,300 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 20:22:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:58,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:22:58,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:22:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 20:22:58,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:22:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538781192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:58,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:22:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 20:22:58,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949913131] [2024-10-23 20:22:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:58,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:22:58,882 INFO L87 Difference]: Start difference. First operand 23406 states and 26250 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 20:22:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:59,546 INFO L93 Difference]: Finished difference Result 44171 states and 49616 transitions. [2024-10-23 20:22:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:59,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 330 [2024-10-23 20:22:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:59,571 INFO L225 Difference]: With dead ends: 44171 [2024-10-23 20:22:59,571 INFO L226 Difference]: Without dead ends: 22390 [2024-10-23 20:22:59,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:22:59,591 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 67 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:59,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 287 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:22:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2024-10-23 20:22:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 21981. [2024-10-23 20:22:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21981 states, 21980 states have (on average 1.114604185623294) internal successors, (24499), 21980 states have internal predecessors, (24499), 0 states have call successors, (0), 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 20:22:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21981 states to 21981 states and 24499 transitions. [2024-10-23 20:22:59,889 INFO L78 Accepts]: Start accepts. Automaton has 21981 states and 24499 transitions. Word has length 330 [2024-10-23 20:22:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:59,890 INFO L471 AbstractCegarLoop]: Abstraction has 21981 states and 24499 transitions. [2024-10-23 20:22:59,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 20:22:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21981 states and 24499 transitions. [2024-10-23 20:22:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-10-23 20:22:59,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:59,916 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:22:59,929 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 20:23:00,116 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,SelfDestructingSolverStorable14 [2024-10-23 20:23:00,117 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:00,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash -911443079, now seen corresponding path program 1 times [2024-10-23 20:23:00,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:00,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512341728] [2024-10-23 20:23:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-23 20:23:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512341728] [2024-10-23 20:23:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512341728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122258918] [2024-10-23 20:23:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:00,815 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 20:23:00,817 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 20:23:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:00,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:23:00,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:23:01,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122258918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:01,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:01,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:23:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121751378] [2024-10-23 20:23:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:01,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:23:01,136 INFO L87 Difference]: Start difference. First operand 21981 states and 24499 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:01,714 INFO L93 Difference]: Finished difference Result 43355 states and 48328 transitions. [2024-10-23 20:23:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2024-10-23 20:23:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:01,738 INFO L225 Difference]: With dead ends: 43355 [2024-10-23 20:23:01,738 INFO L226 Difference]: Without dead ends: 22999 [2024-10-23 20:23:01,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:23:01,753 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 134 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:01,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 44 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:23:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22999 states. [2024-10-23 20:23:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22999 to 21981. [2024-10-23 20:23:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21981 states, 21980 states have (on average 1.1142857142857143) internal successors, (24492), 21980 states have internal predecessors, (24492), 0 states have call successors, (0), 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 20:23:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21981 states to 21981 states and 24492 transitions. [2024-10-23 20:23:01,973 INFO L78 Accepts]: Start accepts. Automaton has 21981 states and 24492 transitions. Word has length 379 [2024-10-23 20:23:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:01,974 INFO L471 AbstractCegarLoop]: Abstraction has 21981 states and 24492 transitions. [2024-10-23 20:23:01,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:23:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 21981 states and 24492 transitions. [2024-10-23 20:23:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-10-23 20:23:01,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:01,995 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:23:02,014 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 20:23:02,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:02,196 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:02,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash -129593323, now seen corresponding path program 1 times [2024-10-23 20:23:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755069034] [2024-10-23 20:23:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 193 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-10-23 20:23:03,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755069034] [2024-10-23 20:23:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755069034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699734820] [2024-10-23 20:23:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:03,554 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 20:23:03,556 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 20:23:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:03,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:23:03,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-23 20:23:03,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699734820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:03,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:03,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 20:23:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315222532] [2024-10-23 20:23:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:03,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:03,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:03,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:03,980 INFO L87 Difference]: Start difference. First operand 21981 states and 24492 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 20:23:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:04,733 INFO L93 Difference]: Finished difference Result 52319 states and 58705 transitions. [2024-10-23 20:23:04,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 426 [2024-10-23 20:23:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:04,767 INFO L225 Difference]: With dead ends: 52319 [2024-10-23 20:23:04,767 INFO L226 Difference]: Without dead ends: 31557 [2024-10-23 20:23:04,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:04,783 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 134 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:04,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 96 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:23:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31557 states. [2024-10-23 20:23:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31557 to 30331. [2024-10-23 20:23:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30331 states, 30330 states have (on average 1.1136168809759315) internal successors, (33776), 30330 states have internal predecessors, (33776), 0 states have call successors, (0), 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 20:23:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30331 states to 30331 states and 33776 transitions. [2024-10-23 20:23:05,068 INFO L78 Accepts]: Start accepts. Automaton has 30331 states and 33776 transitions. Word has length 426 [2024-10-23 20:23:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:05,068 INFO L471 AbstractCegarLoop]: Abstraction has 30331 states and 33776 transitions. [2024-10-23 20:23:05,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 20:23:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 30331 states and 33776 transitions. [2024-10-23 20:23:05,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-23 20:23:05,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:05,092 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:05,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 20:23:05,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-23 20:23:05,293 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:05,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1545228601, now seen corresponding path program 1 times [2024-10-23 20:23:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:05,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000526449] [2024-10-23 20:23:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:05,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-23 20:23:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000526449] [2024-10-23 20:23:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000526449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:05,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367745859] [2024-10-23 20:23:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:05,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:05,651 INFO L87 Difference]: Start difference. First operand 30331 states and 33776 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 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 20:23:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:06,560 INFO L93 Difference]: Finished difference Result 76554 states and 85245 transitions. [2024-10-23 20:23:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 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 446 [2024-10-23 20:23:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:06,613 INFO L225 Difference]: With dead ends: 76554 [2024-10-23 20:23:06,613 INFO L226 Difference]: Without dead ends: 47442 [2024-10-23 20:23:06,640 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 20:23:06,640 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:06,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 134 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:23:06,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47442 states. [2024-10-23 20:23:07,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47442 to 47441. [2024-10-23 20:23:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47440 states have (on average 1.1110876897133222) internal successors, (52710), 47440 states have internal predecessors, (52710), 0 states have call successors, (0), 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 20:23:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 52710 transitions. [2024-10-23 20:23:07,302 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 52710 transitions. Word has length 446 [2024-10-23 20:23:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:07,303 INFO L471 AbstractCegarLoop]: Abstraction has 47441 states and 52710 transitions. [2024-10-23 20:23:07,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 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 20:23:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 52710 transitions. [2024-10-23 20:23:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-10-23 20:23:07,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:07,366 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:07,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 20:23:07,367 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:07,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1231953494, now seen corresponding path program 1 times [2024-10-23 20:23:07,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:07,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940698495] [2024-10-23 20:23:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:07,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 242 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-23 20:23:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:08,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940698495] [2024-10-23 20:23:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940698495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:08,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761777368] [2024-10-23 20:23:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:08,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:23:08,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 20:23:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:08,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:23:08,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-23 20:23:09,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761777368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:09,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:09,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-23 20:23:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719761677] [2024-10-23 20:23:09,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:09,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:09,225 INFO L87 Difference]: Start difference. First operand 47441 states and 52710 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 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 20:23:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:09,722 INFO L93 Difference]: Finished difference Result 110149 states and 122445 transitions. [2024-10-23 20:23:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 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 453 [2024-10-23 20:23:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:09,797 INFO L225 Difference]: With dead ends: 110149 [2024-10-23 20:23:09,797 INFO L226 Difference]: Without dead ends: 64333 [2024-10-23 20:23:09,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:09,831 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 190 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:09,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 437 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:23:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64333 states. [2024-10-23 20:23:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64333 to 64331. [2024-10-23 20:23:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64331 states, 64330 states have (on average 1.110772578890098) internal successors, (71456), 64330 states have internal predecessors, (71456), 0 states have call successors, (0), 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 20:23:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64331 states to 64331 states and 71456 transitions. [2024-10-23 20:23:10,613 INFO L78 Accepts]: Start accepts. Automaton has 64331 states and 71456 transitions. Word has length 453 [2024-10-23 20:23:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:10,614 INFO L471 AbstractCegarLoop]: Abstraction has 64331 states and 71456 transitions. [2024-10-23 20:23:10,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 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 20:23:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 64331 states and 71456 transitions. [2024-10-23 20:23:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2024-10-23 20:23:10,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:10,667 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:10,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 20:23:10,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:10,868 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:10,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash -969430958, now seen corresponding path program 1 times [2024-10-23 20:23:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928932680] [2024-10-23 20:23:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 494 proven. 6 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2024-10-23 20:23:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:13,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928932680] [2024-10-23 20:23:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928932680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401395291] [2024-10-23 20:23:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:13,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:13,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:23:13,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 20:23:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:14,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:23:14,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-10-23 20:23:14,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401395291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:14,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:14,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-23 20:23:14,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667895032] [2024-10-23 20:23:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:14,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:14,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:14,670 INFO L87 Difference]: Start difference. First operand 64331 states and 71456 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 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 20:23:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:15,350 INFO L93 Difference]: Finished difference Result 180355 states and 200718 transitions. [2024-10-23 20:23:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 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 790 [2024-10-23 20:23:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:15,505 INFO L225 Difference]: With dead ends: 180355 [2024-10-23 20:23:15,505 INFO L226 Difference]: Without dead ends: 117649 [2024-10-23 20:23:15,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:15,564 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 206 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:15,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 527 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:23:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117649 states. [2024-10-23 20:23:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117649 to 117640. [2024-10-23 20:23:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117640 states, 117639 states have (on average 1.1130832462023648) internal successors, (130942), 117639 states have internal predecessors, (130942), 0 states have call successors, (0), 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 20:23:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117640 states to 117640 states and 130942 transitions. [2024-10-23 20:23:17,155 INFO L78 Accepts]: Start accepts. Automaton has 117640 states and 130942 transitions. Word has length 790 [2024-10-23 20:23:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:17,156 INFO L471 AbstractCegarLoop]: Abstraction has 117640 states and 130942 transitions. [2024-10-23 20:23:17,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 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 20:23:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 117640 states and 130942 transitions. [2024-10-23 20:23:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2024-10-23 20:23:17,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:17,622 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:17,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 20:23:17,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:17,824 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:17,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -311667917, now seen corresponding path program 1 times [2024-10-23 20:23:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:17,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526199657] [2024-10-23 20:23:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 1905 trivial. 0 not checked. [2024-10-23 20:23:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526199657] [2024-10-23 20:23:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526199657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:19,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854688636] [2024-10-23 20:23:19,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:19,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:19,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:19,377 INFO L87 Difference]: Start difference. First operand 117640 states and 130942 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 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 20:23:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:20,594 INFO L93 Difference]: Finished difference Result 236912 states and 263671 transitions. [2024-10-23 20:23:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 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 913 [2024-10-23 20:23:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:20,759 INFO L225 Difference]: With dead ends: 236912 [2024-10-23 20:23:20,759 INFO L226 Difference]: Without dead ends: 120897 [2024-10-23 20:23:20,802 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 20:23:20,803 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 84 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:20,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 143 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:23:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120897 states. [2024-10-23 20:23:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120897 to 120482. [2024-10-23 20:23:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120482 states, 120481 states have (on average 1.1122666644533163) internal successors, (134007), 120481 states have internal predecessors, (134007), 0 states have call successors, (0), 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 20:23:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120482 states to 120482 states and 134007 transitions. [2024-10-23 20:23:22,835 INFO L78 Accepts]: Start accepts. Automaton has 120482 states and 134007 transitions. Word has length 913 [2024-10-23 20:23:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:22,835 INFO L471 AbstractCegarLoop]: Abstraction has 120482 states and 134007 transitions. [2024-10-23 20:23:22,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 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 20:23:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 120482 states and 134007 transitions. [2024-10-23 20:23:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2024-10-23 20:23:22,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:22,935 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:22,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 20:23:22,935 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1881829654, now seen corresponding path program 1 times [2024-10-23 20:23:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232065278] [2024-10-23 20:23:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2898 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 2613 trivial. 0 not checked. [2024-10-23 20:23:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232065278] [2024-10-23 20:23:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232065278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:24,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:23:24,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:23:24,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635227070] [2024-10-23 20:23:24,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:24,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:23:24,220 INFO L87 Difference]: Start difference. First operand 120482 states and 134007 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 20:23:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:25,380 INFO L93 Difference]: Finished difference Result 244840 states and 272113 transitions. [2024-10-23 20:23:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 947 [2024-10-23 20:23:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:25,532 INFO L225 Difference]: With dead ends: 244840 [2024-10-23 20:23:25,533 INFO L226 Difference]: Without dead ends: 125780 [2024-10-23 20:23:25,618 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 20:23:25,618 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 190 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:25,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 145 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:23:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125780 states. [2024-10-23 20:23:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125780 to 125774. [2024-10-23 20:23:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125774 states, 125773 states have (on average 1.1101985322764027) internal successors, (139633), 125773 states have internal predecessors, (139633), 0 states have call successors, (0), 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 20:23:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125774 states to 125774 states and 139633 transitions. [2024-10-23 20:23:27,388 INFO L78 Accepts]: Start accepts. Automaton has 125774 states and 139633 transitions. Word has length 947 [2024-10-23 20:23:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:27,388 INFO L471 AbstractCegarLoop]: Abstraction has 125774 states and 139633 transitions. [2024-10-23 20:23:27,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 20:23:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 125774 states and 139633 transitions. [2024-10-23 20:23:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2024-10-23 20:23:27,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:27,500 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:27,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 20:23:27,912 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:27,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash 849276253, now seen corresponding path program 1 times [2024-10-23 20:23:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:27,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217471081] [2024-10-23 20:23:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3027 backedges. 618 proven. 6 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked. [2024-10-23 20:23:31,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:31,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217471081] [2024-10-23 20:23:31,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217471081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:31,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189355469] [2024-10-23 20:23:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:31,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:31,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:23:31,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 20:23:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:31,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:23:31,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3027 backedges. 1571 proven. 0 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2024-10-23 20:23:31,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189355469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 20:23:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824038077] [2024-10-23 20:23:31,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:31,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:31,752 INFO L87 Difference]: Start difference. First operand 125774 states and 139633 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 20:23:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:32,617 INFO L93 Difference]: Finished difference Result 309107 states and 343546 transitions. [2024-10-23 20:23:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 961 [2024-10-23 20:23:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:32,836 INFO L225 Difference]: With dead ends: 309107 [2024-10-23 20:23:32,836 INFO L226 Difference]: Without dead ends: 187193 [2024-10-23 20:23:32,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:23:32,931 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 256 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:32,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 806 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:23:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187193 states. [2024-10-23 20:23:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187193 to 182518. [2024-10-23 20:23:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182518 states, 182517 states have (on average 1.1005331010262058) internal successors, (200866), 182517 states have internal predecessors, (200866), 0 states have call successors, (0), 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 20:23:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182518 states to 182518 states and 200866 transitions. [2024-10-23 20:23:36,049 INFO L78 Accepts]: Start accepts. Automaton has 182518 states and 200866 transitions. Word has length 961 [2024-10-23 20:23:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:23:36,049 INFO L471 AbstractCegarLoop]: Abstraction has 182518 states and 200866 transitions. [2024-10-23 20:23:36,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 20:23:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 182518 states and 200866 transitions. [2024-10-23 20:23:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2024-10-23 20:23:36,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:23:36,200 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:23:36,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 20:23:36,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:36,402 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:23:36,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:23:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash 159149038, now seen corresponding path program 1 times [2024-10-23 20:23:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:23:36,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752773680] [2024-10-23 20:23:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:23:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3801 backedges. 498 proven. 6 refuted. 0 times theorem prover too weak. 3297 trivial. 0 not checked. [2024-10-23 20:23:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:23:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752773680] [2024-10-23 20:23:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752773680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:23:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939471193] [2024-10-23 20:23:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:23:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:23:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:23:38,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:23:38,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 20:23:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:23:38,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:23:38,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:23:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3801 backedges. 2303 proven. 0 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2024-10-23 20:23:39,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:23:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939471193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:23:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:23:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:23:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992977725] [2024-10-23 20:23:39,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:23:39,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:23:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:23:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:23:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:23:39,401 INFO L87 Difference]: Start difference. First operand 182518 states and 200866 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 20:23:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:23:40,629 INFO L93 Difference]: Finished difference Result 482080 states and 530594 transitions. [2024-10-23 20:23:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:23:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 1033 [2024-10-23 20:23:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:23:41,011 INFO L225 Difference]: With dead ends: 482080 [2024-10-23 20:23:41,011 INFO L226 Difference]: Without dead ends: 308716 [2024-10-23 20:23:41,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:23:41,719 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 191 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:23:41,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 554 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:23:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308716 states. [2024-10-23 20:23:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308716 to 308713. [2024-10-23 20:23:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308713 states, 308712 states have (on average 1.0992154499987044) internal successors, (339341), 308712 states have internal predecessors, (339341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)