./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 75ad91d1ba346b49105baf3c8411bd3b92e43cc8020f63db454a4318afdf99c1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:18:54,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:18:54,267 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:18:54,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:18:54,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:18:54,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:18:54,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:18:54,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:18:54,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:18:54,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:18:54,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:18:54,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:18:54,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:18:54,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:18:54,312 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:18:54,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:18:54,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:18:54,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:18:54,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:18:54,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:18:54,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:18:54,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:18:54,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:18:54,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:18:54,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:18:54,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:18:54,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:18:54,317 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:18:54,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:18:54,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:18:54,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:18:54,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:18:54,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:18:54,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:18:54,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:18:54,320 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:18:54,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:18:54,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:18:54,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:18:54,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:18:54,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:18:54,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:18:54,322 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75ad91d1ba346b49105baf3c8411bd3b92e43cc8020f63db454a4318afdf99c1 [2024-10-11 03:18:54,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:18:54,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:18:54,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:18:54,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:18:54,599 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:18:54,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2024-10-11 03:18:56,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:18:56,375 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:18:56,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2024-10-11 03:18:56,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ed1625824/1b0e54eda91d46a2bdb567bd2aec7ded/FLAG6517fbcde [2024-10-11 03:18:56,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ed1625824/1b0e54eda91d46a2bdb567bd2aec7ded [2024-10-11 03:18:56,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:18:56,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:18:56,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:18:56,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:18:56,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:18:56,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:56,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316b9703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56, skipping insertion in model container [2024-10-11 03:18:56,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:56,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:18:56,848 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/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c[24372,24385] [2024-10-11 03:18:56,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:18:56,881 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:18:56,954 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/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c[24372,24385] [2024-10-11 03:18:56,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:18:56,972 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:18:56,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56 WrapperNode [2024-10-11 03:18:56,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:18:56,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:18:56,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:18:56,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:18:56,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:56,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,056 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 935 [2024-10-11 03:18:57,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:18:57,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:18:57,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:18:57,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:18:57,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,112 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]. [2024-10-11 03:18:57,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:18:57,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:18:57,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:18:57,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:18:57,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (1/1) ... [2024-10-11 03:18:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:18:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:18:57,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 03:18:57,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 03:18:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:18:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:18:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:18:57,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:18:57,410 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:18:57,414 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:18:58,453 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-10-11 03:18:58,454 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:18:58,515 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:18:58,515 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 03:18:58,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:18:58 BoogieIcfgContainer [2024-10-11 03:18:58,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:18:58,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:18:58,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:18:58,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:18:58,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:18:56" (1/3) ... [2024-10-11 03:18:58,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335494f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:18:58, skipping insertion in model container [2024-10-11 03:18:58,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:18:56" (2/3) ... [2024-10-11 03:18:58,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335494f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:18:58, skipping insertion in model container [2024-10-11 03:18:58,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:18:58" (3/3) ... [2024-10-11 03:18:58,529 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2024-10-11 03:18:58,546 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:18:58,547 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:18:58,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:18:58,633 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;@21892e96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:18:58,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:18:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 269 states have (on average 1.8327137546468402) internal successors, (493), 270 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 03:18:58,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:18:58,663 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] [2024-10-11 03:18:58,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:18:58,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:18:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2010185613, now seen corresponding path program 1 times [2024-10-11 03:18:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:18:58,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196639013] [2024-10-11 03:18:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:18:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:18:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:18:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:18:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:18:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196639013] [2024-10-11 03:18:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196639013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:18:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:18:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 03:18:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133733901] [2024-10-11 03:18:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:18:59,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 03:18:59,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:18:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 03:18:59,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 03:18:59,185 INFO L87 Difference]: Start difference. First operand has 271 states, 269 states have (on average 1.8327137546468402) internal successors, (493), 270 states have internal predecessors, (493), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:18:59,258 INFO L93 Difference]: Finished difference Result 363 states and 657 transitions. [2024-10-11 03:18:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 03:18:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-11 03:18:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:18:59,272 INFO L225 Difference]: With dead ends: 363 [2024-10-11 03:18:59,273 INFO L226 Difference]: Without dead ends: 269 [2024-10-11 03:18:59,276 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 [2024-10-11 03:18:59,279 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:18:59,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 485 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:18:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-10-11 03:18:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-10-11 03:18:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.8208955223880596) internal successors, (488), 268 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 488 transitions. [2024-10-11 03:18:59,338 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 488 transitions. Word has length 74 [2024-10-11 03:18:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:18:59,338 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 488 transitions. [2024-10-11 03:18:59,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 488 transitions. [2024-10-11 03:18:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 03:18:59,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:18:59,342 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] [2024-10-11 03:18:59,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:18:59,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:18:59,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:18:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash 479343349, now seen corresponding path program 1 times [2024-10-11 03:18:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:18:59,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968841030] [2024-10-11 03:18:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:18:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:18:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:18:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:18:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:18:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968841030] [2024-10-11 03:18:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968841030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:18:59,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:18:59,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:18:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112092253] [2024-10-11 03:18:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:18:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:18:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:18:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:18:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:18:59,703 INFO L87 Difference]: Start difference. First operand 269 states and 488 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:18:59,828 INFO L93 Difference]: Finished difference Result 363 states and 651 transitions. [2024-10-11 03:18:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:18:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-11 03:18:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:18:59,832 INFO L225 Difference]: With dead ends: 363 [2024-10-11 03:18:59,832 INFO L226 Difference]: Without dead ends: 269 [2024-10-11 03:18:59,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:18:59,834 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:18:59,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1422 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:18:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-10-11 03:18:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-10-11 03:18:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.708955223880597) internal successors, (458), 268 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 458 transitions. [2024-10-11 03:18:59,852 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 458 transitions. Word has length 74 [2024-10-11 03:18:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:18:59,853 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 458 transitions. [2024-10-11 03:18:59,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:18:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 458 transitions. [2024-10-11 03:18:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-11 03:18:59,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:18:59,860 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] [2024-10-11 03:18:59,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 03:18:59,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:18:59,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:18:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1605090283, now seen corresponding path program 1 times [2024-10-11 03:18:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:18:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708868770] [2024-10-11 03:18:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:18:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:18:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708868770] [2024-10-11 03:19:00,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708868770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:00,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:00,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472264082] [2024-10-11 03:19:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:00,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:00,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:00,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:00,176 INFO L87 Difference]: Start difference. First operand 269 states and 458 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:00,252 INFO L93 Difference]: Finished difference Result 440 states and 757 transitions. [2024-10-11 03:19:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-10-11 03:19:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:00,257 INFO L225 Difference]: With dead ends: 440 [2024-10-11 03:19:00,259 INFO L226 Difference]: Without dead ends: 349 [2024-10-11 03:19:00,260 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 [2024-10-11 03:19:00,261 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 130 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:00,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 866 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-10-11 03:19:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2024-10-11 03:19:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.7072463768115942) internal successors, (589), 345 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 589 transitions. [2024-10-11 03:19:00,289 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 589 transitions. Word has length 103 [2024-10-11 03:19:00,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:00,290 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 589 transitions. [2024-10-11 03:19:00,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 589 transitions. [2024-10-11 03:19:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-11 03:19:00,297 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:00,297 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] [2024-10-11 03:19:00,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 03:19:00,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:00,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -535590047, now seen corresponding path program 1 times [2024-10-11 03:19:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056118478] [2024-10-11 03:19:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:00,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056118478] [2024-10-11 03:19:00,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056118478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:00,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879406056] [2024-10-11 03:19:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:00,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:00,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:00,522 INFO L87 Difference]: Start difference. First operand 346 states and 589 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:00,583 INFO L93 Difference]: Finished difference Result 664 states and 1137 transitions. [2024-10-11 03:19:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:00,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-10-11 03:19:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:00,588 INFO L225 Difference]: With dead ends: 664 [2024-10-11 03:19:00,590 INFO L226 Difference]: Without dead ends: 496 [2024-10-11 03:19:00,591 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 [2024-10-11 03:19:00,595 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 131 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:00,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 879 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-10-11 03:19:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2024-10-11 03:19:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.7087576374745417) internal successors, (839), 491 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 839 transitions. [2024-10-11 03:19:00,617 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 839 transitions. Word has length 106 [2024-10-11 03:19:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:00,618 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 839 transitions. [2024-10-11 03:19:00,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 839 transitions. [2024-10-11 03:19:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-11 03:19:00,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:00,624 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] [2024-10-11 03:19:00,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 03:19:00,624 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:00,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -420025552, now seen corresponding path program 1 times [2024-10-11 03:19:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:00,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191073146] [2024-10-11 03:19:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:00,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:00,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:00,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191073146] [2024-10-11 03:19:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191073146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:00,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:00,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115354676] [2024-10-11 03:19:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:00,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:00,816 INFO L87 Difference]: Start difference. First operand 492 states and 839 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:00,886 INFO L93 Difference]: Finished difference Result 1084 states and 1853 transitions. [2024-10-11 03:19:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:00,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2024-10-11 03:19:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:00,890 INFO L225 Difference]: With dead ends: 1084 [2024-10-11 03:19:00,890 INFO L226 Difference]: Without dead ends: 770 [2024-10-11 03:19:00,891 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 [2024-10-11 03:19:00,892 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 124 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:00,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 880 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-10-11 03:19:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 764. [2024-10-11 03:19:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 1.7024901703800785) internal successors, (1299), 763 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1299 transitions. [2024-10-11 03:19:00,913 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1299 transitions. Word has length 109 [2024-10-11 03:19:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:00,914 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1299 transitions. [2024-10-11 03:19:00,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1299 transitions. [2024-10-11 03:19:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-11 03:19:00,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:00,916 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] [2024-10-11 03:19:00,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 03:19:00,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:00,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1275885688, now seen corresponding path program 1 times [2024-10-11 03:19:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742448858] [2024-10-11 03:19:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:01,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:01,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742448858] [2024-10-11 03:19:01,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742448858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:01,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:01,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:01,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816653451] [2024-10-11 03:19:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:01,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:01,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:01,109 INFO L87 Difference]: Start difference. First operand 764 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:01,176 INFO L93 Difference]: Finished difference Result 1864 states and 3165 transitions. [2024-10-11 03:19:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:01,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-11 03:19:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:01,184 INFO L225 Difference]: With dead ends: 1864 [2024-10-11 03:19:01,184 INFO L226 Difference]: Without dead ends: 1278 [2024-10-11 03:19:01,186 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 [2024-10-11 03:19:01,187 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 117 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:01,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 881 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2024-10-11 03:19:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1268. [2024-10-11 03:19:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 1.6882399368587213) internal successors, (2139), 1267 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 2139 transitions. [2024-10-11 03:19:01,230 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 2139 transitions. Word has length 112 [2024-10-11 03:19:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:01,235 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 2139 transitions. [2024-10-11 03:19:01,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 2139 transitions. [2024-10-11 03:19:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-11 03:19:01,237 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:01,237 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] [2024-10-11 03:19:01,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 03:19:01,237 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:01,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 306782003, now seen corresponding path program 1 times [2024-10-11 03:19:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606459402] [2024-10-11 03:19:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606459402] [2024-10-11 03:19:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606459402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:01,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:01,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:19:01,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499848714] [2024-10-11 03:19:01,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:01,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:19:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:01,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:19:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:19:01,502 INFO L87 Difference]: Start difference. First operand 1268 states and 2139 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:01,838 INFO L93 Difference]: Finished difference Result 6428 states and 10991 transitions. [2024-10-11 03:19:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 03:19:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-10-11 03:19:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:01,859 INFO L225 Difference]: With dead ends: 6428 [2024-10-11 03:19:01,860 INFO L226 Difference]: Without dead ends: 5338 [2024-10-11 03:19:01,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:19:01,866 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 1423 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:01,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3297 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:19:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2024-10-11 03:19:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 2281. [2024-10-11 03:19:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2280 states have (on average 1.688157894736842) internal successors, (3849), 2280 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3849 transitions. [2024-10-11 03:19:01,965 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3849 transitions. Word has length 115 [2024-10-11 03:19:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:01,966 INFO L471 AbstractCegarLoop]: Abstraction has 2281 states and 3849 transitions. [2024-10-11 03:19:01,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3849 transitions. [2024-10-11 03:19:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-11 03:19:01,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:01,968 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] [2024-10-11 03:19:01,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 03:19:01,969 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:01,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash 852103748, now seen corresponding path program 1 times [2024-10-11 03:19:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:01,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137021289] [2024-10-11 03:19:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:02,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:02,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137021289] [2024-10-11 03:19:02,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137021289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:02,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:19:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044087631] [2024-10-11 03:19:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:02,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:19:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:19:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:19:02,165 INFO L87 Difference]: Start difference. First operand 2281 states and 3849 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:02,310 INFO L93 Difference]: Finished difference Result 6638 states and 11300 transitions. [2024-10-11 03:19:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:19:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-10-11 03:19:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:02,327 INFO L225 Difference]: With dead ends: 6638 [2024-10-11 03:19:02,327 INFO L226 Difference]: Without dead ends: 4535 [2024-10-11 03:19:02,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:19:02,333 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 455 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:02,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1454 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2024-10-11 03:19:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 3391. [2024-10-11 03:19:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3391 states, 3390 states have (on average 1.6926253687315633) internal successors, (5738), 3390 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 5738 transitions. [2024-10-11 03:19:02,443 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 5738 transitions. Word has length 116 [2024-10-11 03:19:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:02,443 INFO L471 AbstractCegarLoop]: Abstraction has 3391 states and 5738 transitions. [2024-10-11 03:19:02,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 5738 transitions. [2024-10-11 03:19:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-11 03:19:02,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:02,446 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] [2024-10-11 03:19:02,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 03:19:02,447 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:02,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash 582660412, now seen corresponding path program 1 times [2024-10-11 03:19:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:02,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254047239] [2024-10-11 03:19:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254047239] [2024-10-11 03:19:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254047239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:02,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:02,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:19:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725550989] [2024-10-11 03:19:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:02,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:19:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:19:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:19:02,672 INFO L87 Difference]: Start difference. First operand 3391 states and 5738 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:02,887 INFO L93 Difference]: Finished difference Result 9918 states and 16858 transitions. [2024-10-11 03:19:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:19:02,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-10-11 03:19:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:02,911 INFO L225 Difference]: With dead ends: 9918 [2024-10-11 03:19:02,912 INFO L226 Difference]: Without dead ends: 6705 [2024-10-11 03:19:02,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:19:02,919 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 453 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:02,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1464 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2024-10-11 03:19:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 5024. [2024-10-11 03:19:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5024 states, 5023 states have (on average 1.690025880947641) internal successors, (8489), 5023 states have internal predecessors, (8489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 8489 transitions. [2024-10-11 03:19:03,067 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 8489 transitions. Word has length 117 [2024-10-11 03:19:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:03,068 INFO L471 AbstractCegarLoop]: Abstraction has 5024 states and 8489 transitions. [2024-10-11 03:19:03,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 8489 transitions. [2024-10-11 03:19:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 03:19:03,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:03,071 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] [2024-10-11 03:19:03,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 03:19:03,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:03,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 800059047, now seen corresponding path program 1 times [2024-10-11 03:19:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516234376] [2024-10-11 03:19:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516234376] [2024-10-11 03:19:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516234376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792263820] [2024-10-11 03:19:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:03,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:03,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:03,225 INFO L87 Difference]: Start difference. First operand 5024 states and 8489 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:03,370 INFO L93 Difference]: Finished difference Result 11164 states and 18875 transitions. [2024-10-11 03:19:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-11 03:19:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:03,411 INFO L225 Difference]: With dead ends: 11164 [2024-10-11 03:19:03,411 INFO L226 Difference]: Without dead ends: 7749 [2024-10-11 03:19:03,422 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 [2024-10-11 03:19:03,423 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 130 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:03,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 988 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7749 states. [2024-10-11 03:19:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7749 to 7747. [2024-10-11 03:19:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7747 states, 7746 states have (on average 1.6790601600826234) internal successors, (13006), 7746 states have internal predecessors, (13006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7747 states to 7747 states and 13006 transitions. [2024-10-11 03:19:03,639 INFO L78 Accepts]: Start accepts. Automaton has 7747 states and 13006 transitions. Word has length 118 [2024-10-11 03:19:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:03,643 INFO L471 AbstractCegarLoop]: Abstraction has 7747 states and 13006 transitions. [2024-10-11 03:19:03,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7747 states and 13006 transitions. [2024-10-11 03:19:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 03:19:03,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:03,645 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] [2024-10-11 03:19:03,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 03:19:03,646 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:03,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash 825303341, now seen corresponding path program 1 times [2024-10-11 03:19:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:03,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924599088] [2024-10-11 03:19:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:03,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924599088] [2024-10-11 03:19:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924599088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:19:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503134282] [2024-10-11 03:19:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:03,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:19:03,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:19:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:19:03,919 INFO L87 Difference]: Start difference. First operand 7747 states and 13006 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:04,131 INFO L93 Difference]: Finished difference Result 23002 states and 38810 transitions. [2024-10-11 03:19:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:19:04,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-11 03:19:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:04,172 INFO L225 Difference]: With dead ends: 23002 [2024-10-11 03:19:04,173 INFO L226 Difference]: Without dead ends: 15461 [2024-10-11 03:19:04,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:19:04,191 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 451 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:04,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1411 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2024-10-11 03:19:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 11548. [2024-10-11 03:19:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11548 states, 11547 states have (on average 1.6763661557114402) internal successors, (19357), 11547 states have internal predecessors, (19357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 19357 transitions. [2024-10-11 03:19:04,541 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 19357 transitions. Word has length 118 [2024-10-11 03:19:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:04,541 INFO L471 AbstractCegarLoop]: Abstraction has 11548 states and 19357 transitions. [2024-10-11 03:19:04,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 19357 transitions. [2024-10-11 03:19:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 03:19:04,544 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:04,544 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] [2024-10-11 03:19:04,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 03:19:04,544 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:04,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2113121461, now seen corresponding path program 1 times [2024-10-11 03:19:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332424947] [2024-10-11 03:19:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:04,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:04,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332424947] [2024-10-11 03:19:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332424947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15806141] [2024-10-11 03:19:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:04,673 INFO L87 Difference]: Start difference. First operand 11548 states and 19357 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:05,019 INFO L93 Difference]: Finished difference Result 23164 states and 38863 transitions. [2024-10-11 03:19:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-11 03:19:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:05,063 INFO L225 Difference]: With dead ends: 23164 [2024-10-11 03:19:05,064 INFO L226 Difference]: Without dead ends: 16692 [2024-10-11 03:19:05,077 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 [2024-10-11 03:19:05,078 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 116 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:05,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 951 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16692 states. [2024-10-11 03:19:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16692 to 16690. [2024-10-11 03:19:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16690 states, 16689 states have (on average 1.6653484330996464) internal successors, (27793), 16689 states have internal predecessors, (27793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16690 states to 16690 states and 27793 transitions. [2024-10-11 03:19:05,654 INFO L78 Accepts]: Start accepts. Automaton has 16690 states and 27793 transitions. Word has length 118 [2024-10-11 03:19:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:05,654 INFO L471 AbstractCegarLoop]: Abstraction has 16690 states and 27793 transitions. [2024-10-11 03:19:05,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16690 states and 27793 transitions. [2024-10-11 03:19:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 03:19:05,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:05,656 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] [2024-10-11 03:19:05,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 03:19:05,664 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:05,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 366665032, now seen corresponding path program 1 times [2024-10-11 03:19:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112939247] [2024-10-11 03:19:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:05,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:05,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112939247] [2024-10-11 03:19:05,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112939247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:05,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:05,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003347781] [2024-10-11 03:19:05,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:05,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:05,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:05,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:05,795 INFO L87 Difference]: Start difference. First operand 16690 states and 27793 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:06,185 INFO L93 Difference]: Finished difference Result 37112 states and 61867 transitions. [2024-10-11 03:19:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-11 03:19:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:06,245 INFO L225 Difference]: With dead ends: 37112 [2024-10-11 03:19:06,246 INFO L226 Difference]: Without dead ends: 25481 [2024-10-11 03:19:06,265 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 [2024-10-11 03:19:06,266 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 123 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:06,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 979 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25481 states. [2024-10-11 03:19:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25481 to 25479. [2024-10-11 03:19:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25479 states, 25478 states have (on average 1.6527984928173327) internal successors, (42110), 25478 states have internal predecessors, (42110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25479 states to 25479 states and 42110 transitions. [2024-10-11 03:19:06,928 INFO L78 Accepts]: Start accepts. Automaton has 25479 states and 42110 transitions. Word has length 118 [2024-10-11 03:19:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:06,929 INFO L471 AbstractCegarLoop]: Abstraction has 25479 states and 42110 transitions. [2024-10-11 03:19:06,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 25479 states and 42110 transitions. [2024-10-11 03:19:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-11 03:19:06,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:06,931 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] [2024-10-11 03:19:06,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 03:19:06,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:06,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 945959398, now seen corresponding path program 1 times [2024-10-11 03:19:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:06,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327393023] [2024-10-11 03:19:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327393023] [2024-10-11 03:19:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327393023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:07,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549039364] [2024-10-11 03:19:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:07,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:07,068 INFO L87 Difference]: Start difference. First operand 25479 states and 42110 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:07,846 INFO L93 Difference]: Finished difference Result 57468 states and 95667 transitions. [2024-10-11 03:19:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:07,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-11 03:19:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:07,945 INFO L225 Difference]: With dead ends: 57468 [2024-10-11 03:19:07,945 INFO L226 Difference]: Without dead ends: 39155 [2024-10-11 03:19:07,981 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 [2024-10-11 03:19:07,982 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 137 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:07,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1009 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39155 states. [2024-10-11 03:19:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39155 to 39153. [2024-10-11 03:19:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39153 states, 39152 states have (on average 1.6456375153248877) internal successors, (64430), 39152 states have internal predecessors, (64430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39153 states to 39153 states and 64430 transitions. [2024-10-11 03:19:08,975 INFO L78 Accepts]: Start accepts. Automaton has 39153 states and 64430 transitions. Word has length 118 [2024-10-11 03:19:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:08,975 INFO L471 AbstractCegarLoop]: Abstraction has 39153 states and 64430 transitions. [2024-10-11 03:19:08,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 39153 states and 64430 transitions. [2024-10-11 03:19:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-11 03:19:08,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:08,977 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] [2024-10-11 03:19:08,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 03:19:08,978 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:08,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -237248699, now seen corresponding path program 1 times [2024-10-11 03:19:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:08,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619303625] [2024-10-11 03:19:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619303625] [2024-10-11 03:19:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619303625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:19:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139146655] [2024-10-11 03:19:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:09,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:19:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:19:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:19:09,339 INFO L87 Difference]: Start difference. First operand 39153 states and 64430 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:10,587 INFO L93 Difference]: Finished difference Result 126893 states and 209388 transitions. [2024-10-11 03:19:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:19:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2024-10-11 03:19:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:10,830 INFO L225 Difference]: With dead ends: 126893 [2024-10-11 03:19:10,831 INFO L226 Difference]: Without dead ends: 87941 [2024-10-11 03:19:10,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 03:19:10,903 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 449 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:10,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1457 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87941 states. [2024-10-11 03:19:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87941 to 63322. [2024-10-11 03:19:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63322 states, 63321 states have (on average 1.6383664187236462) internal successors, (103743), 63321 states have internal predecessors, (103743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63322 states to 63322 states and 103743 transitions. [2024-10-11 03:19:12,668 INFO L78 Accepts]: Start accepts. Automaton has 63322 states and 103743 transitions. Word has length 119 [2024-10-11 03:19:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:12,669 INFO L471 AbstractCegarLoop]: Abstraction has 63322 states and 103743 transitions. [2024-10-11 03:19:12,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 63322 states and 103743 transitions. [2024-10-11 03:19:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-11 03:19:12,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:12,671 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] [2024-10-11 03:19:12,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 03:19:12,671 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:12,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1840040595, now seen corresponding path program 1 times [2024-10-11 03:19:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049506606] [2024-10-11 03:19:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:13,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049506606] [2024-10-11 03:19:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049506606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:13,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:19:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509206037] [2024-10-11 03:19:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:13,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:19:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:19:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:19:13,052 INFO L87 Difference]: Start difference. First operand 63322 states and 103743 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:14,742 INFO L93 Difference]: Finished difference Result 126445 states and 207157 transitions. [2024-10-11 03:19:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:19:14,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-10-11 03:19:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:14,887 INFO L225 Difference]: With dead ends: 126445 [2024-10-11 03:19:14,887 INFO L226 Difference]: Without dead ends: 63324 [2024-10-11 03:19:14,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:19:14,927 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 357 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:14,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1721 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63324 states. [2024-10-11 03:19:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63324 to 63322. [2024-10-11 03:19:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63322 states, 63321 states have (on average 1.6284960755515547) internal successors, (103118), 63321 states have internal predecessors, (103118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63322 states to 63322 states and 103118 transitions. [2024-10-11 03:19:16,280 INFO L78 Accepts]: Start accepts. Automaton has 63322 states and 103118 transitions. Word has length 121 [2024-10-11 03:19:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:16,281 INFO L471 AbstractCegarLoop]: Abstraction has 63322 states and 103118 transitions. [2024-10-11 03:19:16,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 63322 states and 103118 transitions. [2024-10-11 03:19:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-11 03:19:16,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:16,283 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] [2024-10-11 03:19:16,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 03:19:16,283 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:16,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1478181686, now seen corresponding path program 1 times [2024-10-11 03:19:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141058934] [2024-10-11 03:19:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141058934] [2024-10-11 03:19:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141058934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:17,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:19:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60392234] [2024-10-11 03:19:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:17,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:19:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:19:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:19:17,025 INFO L87 Difference]: Start difference. First operand 63322 states and 103118 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:18,581 INFO L93 Difference]: Finished difference Result 185227 states and 302089 transitions. [2024-10-11 03:19:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:19:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-11 03:19:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:18,839 INFO L225 Difference]: With dead ends: 185227 [2024-10-11 03:19:18,839 INFO L226 Difference]: Without dead ends: 122106 [2024-10-11 03:19:18,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:19:18,914 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 235 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:18,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1730 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:19:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122106 states. [2024-10-11 03:19:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122106 to 122104. [2024-10-11 03:19:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122104 states, 122103 states have (on average 1.6157096877226604) internal successors, (197283), 122103 states have internal predecessors, (197283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122104 states to 122104 states and 197283 transitions. [2024-10-11 03:19:21,632 INFO L78 Accepts]: Start accepts. Automaton has 122104 states and 197283 transitions. Word has length 124 [2024-10-11 03:19:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:21,632 INFO L471 AbstractCegarLoop]: Abstraction has 122104 states and 197283 transitions. [2024-10-11 03:19:21,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 122104 states and 197283 transitions. [2024-10-11 03:19:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-11 03:19:21,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:21,634 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] [2024-10-11 03:19:21,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 03:19:21,635 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:21,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1406457828, now seen corresponding path program 1 times [2024-10-11 03:19:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075844100] [2024-10-11 03:19:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:19:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075844100] [2024-10-11 03:19:22,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075844100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:22,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:22,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:19:22,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146176369] [2024-10-11 03:19:22,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:22,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:19:22,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:19:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:19:22,097 INFO L87 Difference]: Start difference. First operand 122104 states and 197283 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:24,106 INFO L93 Difference]: Finished difference Result 125978 states and 203092 transitions. [2024-10-11 03:19:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 03:19:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-10-11 03:19:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:24,314 INFO L225 Difference]: With dead ends: 125978 [2024-10-11 03:19:24,314 INFO L226 Difference]: Without dead ends: 125976 [2024-10-11 03:19:24,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:19:24,347 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:24,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2249 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 03:19:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125976 states. [2024-10-11 03:19:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125976 to 125976. [2024-10-11 03:19:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125976 states, 125975 states have (on average 1.5965707481643183) internal successors, (201128), 125975 states have internal predecessors, (201128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125976 states to 125976 states and 201128 transitions. [2024-10-11 03:19:26,670 INFO L78 Accepts]: Start accepts. Automaton has 125976 states and 201128 transitions. Word has length 125 [2024-10-11 03:19:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:26,671 INFO L471 AbstractCegarLoop]: Abstraction has 125976 states and 201128 transitions. [2024-10-11 03:19:26,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 125976 states and 201128 transitions. [2024-10-11 03:19:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-11 03:19:26,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:26,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:19:26,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 03:19:26,677 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:26,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1968407899, now seen corresponding path program 1 times [2024-10-11 03:19:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295637207] [2024-10-11 03:19:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 03:19:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295637207] [2024-10-11 03:19:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295637207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:26,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405505116] [2024-10-11 03:19:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:26,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:26,823 INFO L87 Difference]: Start difference. First operand 125976 states and 201128 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:30,083 INFO L93 Difference]: Finished difference Result 376897 states and 601341 transitions. [2024-10-11 03:19:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-11 03:19:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:30,614 INFO L225 Difference]: With dead ends: 376897 [2024-10-11 03:19:30,614 INFO L226 Difference]: Without dead ends: 250985 [2024-10-11 03:19:30,741 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 [2024-10-11 03:19:30,741 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 316 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:30,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1122 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250985 states. [2024-10-11 03:19:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250985 to 250983. [2024-10-11 03:19:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250983 states, 250982 states have (on average 1.5860420269182651) internal successors, (398068), 250982 states have internal predecessors, (398068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250983 states to 250983 states and 398068 transitions. [2024-10-11 03:19:36,819 INFO L78 Accepts]: Start accepts. Automaton has 250983 states and 398068 transitions. Word has length 161 [2024-10-11 03:19:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:19:36,819 INFO L471 AbstractCegarLoop]: Abstraction has 250983 states and 398068 transitions. [2024-10-11 03:19:36,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 250983 states and 398068 transitions. [2024-10-11 03:19:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-11 03:19:36,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:19:36,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:19:36,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 03:19:36,827 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:19:36,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:19:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash -944772609, now seen corresponding path program 1 times [2024-10-11 03:19:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:19:36,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389452356] [2024-10-11 03:19:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:19:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:19:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:19:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 03:19:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:19:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389452356] [2024-10-11 03:19:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389452356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:19:36,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:19:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:19:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687274987] [2024-10-11 03:19:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:19:36,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:19:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:19:36,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:19:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:19:36,963 INFO L87 Difference]: Start difference. First operand 250983 states and 398068 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:19:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:19:43,085 INFO L93 Difference]: Finished difference Result 751019 states and 1190360 transitions. [2024-10-11 03:19:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:19:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-10-11 03:19:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:19:44,277 INFO L225 Difference]: With dead ends: 751019 [2024-10-11 03:19:44,277 INFO L226 Difference]: Without dead ends: 500092 [2024-10-11 03:19:44,501 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 [2024-10-11 03:19:44,502 INFO L432 NwaCegarLoop]: 705 mSDtfsCounter, 338 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:19:44,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:19:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500092 states.