./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_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:23:42,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:23:42,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:23:42,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:23:42,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:23:42,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:23:42,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:23:42,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:23:42,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:23:42,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:23:42,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:23:42,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:23:42,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:23:42,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:23:42,848 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:23:42,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:23:42,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:23:42,849 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:23:42,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:23:42,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:23:42,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:23:42,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:23:42,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:23:42,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:23:42,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:23:42,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:23:42,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:23:42,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:23:42,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:23:42,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:23:42,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:23:42,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:23:42,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:42,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:23:42,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:23:42,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:23:42,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:23:42,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:23:42,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:23:42,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:23:42,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:23:42,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:23:42,865 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd1724e619d2e8fc18a4dc8aa6c726656a51fc7e14f993d511c4c773ed4748f3 [2024-10-24 01:23:43,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:23:43,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:23:43,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:23:43,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:23:43,132 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:23:43,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:23:44,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:23:44,838 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:23:44,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:23:44,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7798e4/e15e60befb3649a599628aff5e1db9ef/FLAG7e93931b9 [2024-10-24 01:23:44,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fde7798e4/e15e60befb3649a599628aff5e1db9ef [2024-10-24 01:23:44,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:23:44,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:23:44,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:44,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:23:44,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:23:44,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:44" (1/1) ... [2024-10-24 01:23:44,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b37211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:44, skipping insertion in model container [2024-10-24 01:23:44,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:44" (1/1) ... [2024-10-24 01:23:44,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:23:45,202 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_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2024-10-24 01:23:45,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:45,226 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:23:45,291 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_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c[17005,17018] [2024-10-24 01:23:45,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:23:45,312 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:23:45,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45 WrapperNode [2024-10-24 01:23:45,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:23:45,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:45,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:23:45,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:23:45,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,367 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 454 [2024-10-24 01:23:45,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:23:45,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:23:45,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:23:45,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:23:45,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,430 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]. [2024-10-24 01:23:45,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:23:45,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:23:45,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:23:45,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:23:45,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (1/1) ... [2024-10-24 01:23:45,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:23:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:23:45,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:23:45,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:23:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:23:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:23:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:23:45,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:23:45,750 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:23:45,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:23:46,325 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-24 01:23:46,326 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:23:46,387 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:23:46,389 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:23:46,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:46 BoogieIcfgContainer [2024-10-24 01:23:46,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:23:46,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:23:46,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:23:46,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:23:46,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:44" (1/3) ... [2024-10-24 01:23:46,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d2f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:46, skipping insertion in model container [2024-10-24 01:23:46,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:45" (2/3) ... [2024-10-24 01:23:46,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d2f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:46, skipping insertion in model container [2024-10-24 01:23:46,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:46" (3/3) ... [2024-10-24 01:23:46,400 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:23:46,418 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:23:46,418 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:23:46,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:23:46,492 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;@5a86e7c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:23:46,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:23:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:23:46,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:46,507 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] [2024-10-24 01:23:46,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:46,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1104781184, now seen corresponding path program 1 times [2024-10-24 01:23:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:46,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460954820] [2024-10-24 01:23:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460954820] [2024-10-24 01:23:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460954820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211109266] [2024-10-24 01:23:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:46,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:47,017 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:47,143 INFO L93 Difference]: Finished difference Result 192 states and 332 transitions. [2024-10-24 01:23:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:47,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-24 01:23:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:47,155 INFO L225 Difference]: With dead ends: 192 [2024-10-24 01:23:47,156 INFO L226 Difference]: Without dead ends: 116 [2024-10-24 01:23:47,158 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 [2024-10-24 01:23:47,162 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:47,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-24 01:23:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-24 01:23:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4086956521739131) internal successors, (162), 115 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 162 transitions. [2024-10-24 01:23:47,200 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 162 transitions. Word has length 34 [2024-10-24 01:23:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:47,200 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 162 transitions. [2024-10-24 01:23:47,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 162 transitions. [2024-10-24 01:23:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:47,203 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:47,203 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] [2024-10-24 01:23:47,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:23:47,204 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:47,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash 793023434, now seen corresponding path program 1 times [2024-10-24 01:23:47,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:47,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161762153] [2024-10-24 01:23:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:47,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161762153] [2024-10-24 01:23:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161762153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:47,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:47,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712974410] [2024-10-24 01:23:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:47,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:47,418 INFO L87 Difference]: Start difference. First operand 116 states and 162 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:47,467 INFO L93 Difference]: Finished difference Result 250 states and 382 transitions. [2024-10-24 01:23:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 [2024-10-24 01:23:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:47,470 INFO L225 Difference]: With dead ends: 250 [2024-10-24 01:23:47,470 INFO L226 Difference]: Without dead ends: 179 [2024-10-24 01:23:47,473 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 [2024-10-24 01:23:47,476 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 101 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 354 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 [2024-10-24 01:23:47,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 354 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-24 01:23:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2024-10-24 01:23:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 176 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2024-10-24 01:23:47,500 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 74 [2024-10-24 01:23:47,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:47,501 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2024-10-24 01:23:47,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2024-10-24 01:23:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:47,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:47,504 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] [2024-10-24 01:23:47,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:23:47,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:47,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash 706247657, now seen corresponding path program 1 times [2024-10-24 01:23:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:47,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896143103] [2024-10-24 01:23:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896143103] [2024-10-24 01:23:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896143103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:47,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:47,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846325214] [2024-10-24 01:23:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:47,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:47,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:47,694 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:47,740 INFO L93 Difference]: Finished difference Result 425 states and 671 transitions. [2024-10-24 01:23:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 [2024-10-24 01:23:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:47,743 INFO L225 Difference]: With dead ends: 425 [2024-10-24 01:23:47,743 INFO L226 Difference]: Without dead ends: 293 [2024-10-24 01:23:47,744 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 [2024-10-24 01:23:47,749 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 325 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 [2024-10-24 01:23:47,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 325 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-10-24 01:23:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2024-10-24 01:23:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5517241379310345) internal successors, (450), 290 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 450 transitions. [2024-10-24 01:23:47,787 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 450 transitions. Word has length 74 [2024-10-24 01:23:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:47,788 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 450 transitions. [2024-10-24 01:23:47,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 450 transitions. [2024-10-24 01:23:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:47,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:47,790 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] [2024-10-24 01:23:47,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:23:47,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:47,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1617451656, now seen corresponding path program 1 times [2024-10-24 01:23:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125620407] [2024-10-24 01:23:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:47,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125620407] [2024-10-24 01:23:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125620407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:47,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865760663] [2024-10-24 01:23:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:47,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:47,924 INFO L87 Difference]: Start difference. First operand 291 states and 450 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:47,955 INFO L93 Difference]: Finished difference Result 751 states and 1204 transitions. [2024-10-24 01:23:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 [2024-10-24 01:23:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:47,959 INFO L225 Difference]: With dead ends: 751 [2024-10-24 01:23:47,959 INFO L226 Difference]: Without dead ends: 505 [2024-10-24 01:23:47,960 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 [2024-10-24 01:23:47,961 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 85 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 322 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 [2024-10-24 01:23:47,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-10-24 01:23:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 503. [2024-10-24 01:23:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.5816733067729083) internal successors, (794), 502 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 794 transitions. [2024-10-24 01:23:47,995 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 794 transitions. Word has length 74 [2024-10-24 01:23:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:47,995 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 794 transitions. [2024-10-24 01:23:47,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-10-24 01:23:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 794 transitions. [2024-10-24 01:23:47,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:23:48,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:48,010 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] [2024-10-24 01:23:48,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:23:48,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:48,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2004246695, now seen corresponding path program 1 times [2024-10-24 01:23:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782980040] [2024-10-24 01:23:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:48,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782980040] [2024-10-24 01:23:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782980040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:48,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:48,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470965620] [2024-10-24 01:23:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:48,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:48,277 INFO L87 Difference]: Start difference. First operand 503 states and 794 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2024-10-24 01:23:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:48,540 INFO L93 Difference]: Finished difference Result 3709 states and 6037 transitions. [2024-10-24 01:23:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 [2024-10-24 01:23:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:48,558 INFO L225 Difference]: With dead ends: 3709 [2024-10-24 01:23:48,558 INFO L226 Difference]: Without dead ends: 3251 [2024-10-24 01:23:48,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:48,563 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 1681 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:48,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1409 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2024-10-24 01:23:48,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 959. [2024-10-24 01:23:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.592901878914405) internal successors, (1526), 958 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1526 transitions. [2024-10-24 01:23:48,616 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1526 transitions. Word has length 74 [2024-10-24 01:23:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:48,617 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1526 transitions. [2024-10-24 01:23:48,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2024-10-24 01:23:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1526 transitions. [2024-10-24 01:23:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 01:23:48,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:48,618 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] [2024-10-24 01:23:48,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:23:48,619 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:48,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1989045912, now seen corresponding path program 1 times [2024-10-24 01:23:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605223849] [2024-10-24 01:23:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:48,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605223849] [2024-10-24 01:23:48,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605223849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:48,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:48,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:23:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710679197] [2024-10-24 01:23:48,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:48,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:23:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:23:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:23:48,909 INFO L87 Difference]: Start difference. First operand 959 states and 1526 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:48,948 INFO L93 Difference]: Finished difference Result 993 states and 1575 transitions. [2024-10-24 01:23:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:23:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-24 01:23:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:48,954 INFO L225 Difference]: With dead ends: 993 [2024-10-24 01:23:48,955 INFO L226 Difference]: Without dead ends: 991 [2024-10-24 01:23:48,956 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 [2024-10-24 01:23:48,958 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:48,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-10-24 01:23:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-10-24 01:23:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.5737373737373737) internal successors, (1558), 990 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1558 transitions. [2024-10-24 01:23:48,992 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1558 transitions. Word has length 75 [2024-10-24 01:23:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:48,993 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1558 transitions. [2024-10-24 01:23:48,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1558 transitions. [2024-10-24 01:23:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 01:23:48,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:48,994 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] [2024-10-24 01:23:48,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:23:48,994 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1531882991, now seen corresponding path program 1 times [2024-10-24 01:23:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798028862] [2024-10-24 01:23:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:49,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798028862] [2024-10-24 01:23:49,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798028862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:49,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581994002] [2024-10-24 01:23:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:49,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:49,121 INFO L87 Difference]: Start difference. First operand 991 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:49,170 INFO L93 Difference]: Finished difference Result 2771 states and 4392 transitions. [2024-10-24 01:23:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-24 01:23:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:49,177 INFO L225 Difference]: With dead ends: 2771 [2024-10-24 01:23:49,178 INFO L226 Difference]: Without dead ends: 1825 [2024-10-24 01:23:49,179 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 [2024-10-24 01:23:49,180 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:49,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 267 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-10-24 01:23:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1807. [2024-10-24 01:23:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1806 states have (on average 1.566998892580288) internal successors, (2830), 1806 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2830 transitions. [2024-10-24 01:23:49,231 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2830 transitions. Word has length 76 [2024-10-24 01:23:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:49,232 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 2830 transitions. [2024-10-24 01:23:49,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2830 transitions. [2024-10-24 01:23:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:49,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:49,235 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] [2024-10-24 01:23:49,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:23:49,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:49,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash -446375905, now seen corresponding path program 1 times [2024-10-24 01:23:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:49,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984496659] [2024-10-24 01:23:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:49,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984496659] [2024-10-24 01:23:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984496659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:49,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:49,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:49,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449850460] [2024-10-24 01:23:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:49,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:49,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:49,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:49,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:49,342 INFO L87 Difference]: Start difference. First operand 1807 states and 2830 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:49,432 INFO L93 Difference]: Finished difference Result 5075 states and 7952 transitions. [2024-10-24 01:23:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 01:23:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:49,445 INFO L225 Difference]: With dead ends: 5075 [2024-10-24 01:23:49,445 INFO L226 Difference]: Without dead ends: 3313 [2024-10-24 01:23:49,449 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 [2024-10-24 01:23:49,450 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 93 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 339 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 [2024-10-24 01:23:49,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 339 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2024-10-24 01:23:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3311. [2024-10-24 01:23:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 3310 states have (on average 1.5510574018126888) internal successors, (5134), 3310 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5134 transitions. [2024-10-24 01:23:49,538 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5134 transitions. Word has length 77 [2024-10-24 01:23:49,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:49,538 INFO L471 AbstractCegarLoop]: Abstraction has 3311 states and 5134 transitions. [2024-10-24 01:23:49,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5134 transitions. [2024-10-24 01:23:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:23:49,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:49,540 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] [2024-10-24 01:23:49,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:23:49,540 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:49,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 925708607, now seen corresponding path program 1 times [2024-10-24 01:23:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:49,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333175433] [2024-10-24 01:23:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:49,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333175433] [2024-10-24 01:23:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333175433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:49,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:49,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249737230] [2024-10-24 01:23:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:49,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:49,616 INFO L87 Difference]: Start difference. First operand 3311 states and 5134 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:49,719 INFO L93 Difference]: Finished difference Result 9331 states and 14416 transitions. [2024-10-24 01:23:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 01:23:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:49,743 INFO L225 Difference]: With dead ends: 9331 [2024-10-24 01:23:49,743 INFO L226 Difference]: Without dead ends: 6065 [2024-10-24 01:23:49,751 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 [2024-10-24 01:23:49,751 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 97 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 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 [2024-10-24 01:23:49,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2024-10-24 01:23:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 6063. [2024-10-24 01:23:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6063 states, 6062 states have (on average 1.5278785879247774) internal successors, (9262), 6062 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 9262 transitions. [2024-10-24 01:23:49,950 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 9262 transitions. Word has length 77 [2024-10-24 01:23:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:49,950 INFO L471 AbstractCegarLoop]: Abstraction has 6063 states and 9262 transitions. [2024-10-24 01:23:49,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 9262 transitions. [2024-10-24 01:23:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:23:49,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:49,951 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] [2024-10-24 01:23:49,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:23:49,952 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:49,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash 537132629, now seen corresponding path program 1 times [2024-10-24 01:23:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494902493] [2024-10-24 01:23:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:23:50,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494902493] [2024-10-24 01:23:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494902493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:50,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:23:50,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422047754] [2024-10-24 01:23:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:50,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:23:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:23:50,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:23:50,023 INFO L87 Difference]: Start difference. First operand 6063 states and 9262 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:50,145 INFO L93 Difference]: Finished difference Result 11958 states and 18356 transitions. [2024-10-24 01:23:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:23:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-24 01:23:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:50,177 INFO L225 Difference]: With dead ends: 11958 [2024-10-24 01:23:50,177 INFO L226 Difference]: Without dead ends: 8691 [2024-10-24 01:23:50,183 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 [2024-10-24 01:23:50,184 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 102 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 364 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 [2024-10-24 01:23:50,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 364 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:23:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2024-10-24 01:23:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8689. [2024-10-24 01:23:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8689 states, 8688 states have (on average 1.5193370165745856) internal successors, (13200), 8688 states have internal predecessors, (13200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 13200 transitions. [2024-10-24 01:23:50,441 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 13200 transitions. Word has length 78 [2024-10-24 01:23:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:50,442 INFO L471 AbstractCegarLoop]: Abstraction has 8689 states and 13200 transitions. [2024-10-24 01:23:50,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 13200 transitions. [2024-10-24 01:23:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:23:50,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:50,447 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:23:50,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:23:50,448 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:50,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2110410325, now seen corresponding path program 1 times [2024-10-24 01:23:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:50,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698805941] [2024-10-24 01:23:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:23:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698805941] [2024-10-24 01:23:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698805941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:50,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303469075] [2024-10-24 01:23:50,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:50,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:50,715 INFO L87 Difference]: Start difference. First operand 8689 states and 13200 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:51,372 INFO L93 Difference]: Finished difference Result 33343 states and 51207 transitions. [2024-10-24 01:23:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2024-10-24 01:23:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:51,441 INFO L225 Difference]: With dead ends: 33343 [2024-10-24 01:23:51,441 INFO L226 Difference]: Without dead ends: 28989 [2024-10-24 01:23:51,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:51,454 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 1468 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:51,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1322 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2024-10-24 01:23:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 12977. [2024-10-24 01:23:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12977 states, 12976 states have (on average 1.5191122071516645) internal successors, (19712), 12976 states have internal predecessors, (19712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12977 states to 12977 states and 19712 transitions. [2024-10-24 01:23:51,926 INFO L78 Accepts]: Start accepts. Automaton has 12977 states and 19712 transitions. Word has length 107 [2024-10-24 01:23:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:51,927 INFO L471 AbstractCegarLoop]: Abstraction has 12977 states and 19712 transitions. [2024-10-24 01:23:51,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 12977 states and 19712 transitions. [2024-10-24 01:23:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:23:51,935 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:51,936 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:23:51,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:23:51,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:51,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1034416659, now seen corresponding path program 1 times [2024-10-24 01:23:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:51,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196358951] [2024-10-24 01:23:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 01:23:52,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196358951] [2024-10-24 01:23:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196358951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:52,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:52,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123759997] [2024-10-24 01:23:52,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:52,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:52,193 INFO L87 Difference]: Start difference. First operand 12977 states and 19712 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:52,834 INFO L93 Difference]: Finished difference Result 37631 states and 57719 transitions. [2024-10-24 01:23:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:52,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 107 [2024-10-24 01:23:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:52,896 INFO L225 Difference]: With dead ends: 37631 [2024-10-24 01:23:52,897 INFO L226 Difference]: Without dead ends: 33277 [2024-10-24 01:23:52,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:52,910 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1565 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:52,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1338 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33277 states. [2024-10-24 01:23:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33277 to 17265. [2024-10-24 01:23:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17265 states, 17264 states have (on average 1.5189990732159406) internal successors, (26224), 17264 states have internal predecessors, (26224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17265 states to 17265 states and 26224 transitions. [2024-10-24 01:23:53,691 INFO L78 Accepts]: Start accepts. Automaton has 17265 states and 26224 transitions. Word has length 107 [2024-10-24 01:23:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:53,692 INFO L471 AbstractCegarLoop]: Abstraction has 17265 states and 26224 transitions. [2024-10-24 01:23:53,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17265 states and 26224 transitions. [2024-10-24 01:23:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:23:53,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:53,711 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:23:53,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:23:53,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:53,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 409916945, now seen corresponding path program 1 times [2024-10-24 01:23:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:53,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99844814] [2024-10-24 01:23:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:53,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 01:23:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99844814] [2024-10-24 01:23:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99844814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:53,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:53,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225654338] [2024-10-24 01:23:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:53,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:54,000 INFO L87 Difference]: Start difference. First operand 17265 states and 26224 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:54,701 INFO L93 Difference]: Finished difference Result 41919 states and 64231 transitions. [2024-10-24 01:23:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 107 [2024-10-24 01:23:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:54,772 INFO L225 Difference]: With dead ends: 41919 [2024-10-24 01:23:54,773 INFO L226 Difference]: Without dead ends: 37565 [2024-10-24 01:23:54,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:54,786 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1440 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:54,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1399 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37565 states. [2024-10-24 01:23:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37565 to 21553. [2024-10-24 01:23:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21553 states, 21552 states have (on average 1.5189309576837418) internal successors, (32736), 21552 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21553 states to 21553 states and 32736 transitions. [2024-10-24 01:23:55,765 INFO L78 Accepts]: Start accepts. Automaton has 21553 states and 32736 transitions. Word has length 107 [2024-10-24 01:23:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:55,765 INFO L471 AbstractCegarLoop]: Abstraction has 21553 states and 32736 transitions. [2024-10-24 01:23:55,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 21553 states and 32736 transitions. [2024-10-24 01:23:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:23:55,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:55,774 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:23:55,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:23:55,775 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:55,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:55,775 INFO L85 PathProgramCache]: Analyzing trace with hash -59114348, now seen corresponding path program 1 times [2024-10-24 01:23:55,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:55,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055032643] [2024-10-24 01:23:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:23:55,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:55,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055032643] [2024-10-24 01:23:55,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055032643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:55,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129839755] [2024-10-24 01:23:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:55,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:55,996 INFO L87 Difference]: Start difference. First operand 21553 states and 32736 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:56,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:56,865 INFO L93 Difference]: Finished difference Result 46207 states and 70743 transitions. [2024-10-24 01:23:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:56,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 107 [2024-10-24 01:23:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:57,023 INFO L225 Difference]: With dead ends: 46207 [2024-10-24 01:23:57,023 INFO L226 Difference]: Without dead ends: 41853 [2024-10-24 01:23:57,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:57,035 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 1276 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:57,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1534 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41853 states. [2024-10-24 01:23:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41853 to 25841. [2024-10-24 01:23:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25841 states, 25840 states have (on average 1.5188854489164088) internal successors, (39248), 25840 states have internal predecessors, (39248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25841 states to 25841 states and 39248 transitions. [2024-10-24 01:23:57,918 INFO L78 Accepts]: Start accepts. Automaton has 25841 states and 39248 transitions. Word has length 107 [2024-10-24 01:23:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:23:57,918 INFO L471 AbstractCegarLoop]: Abstraction has 25841 states and 39248 transitions. [2024-10-24 01:23:57,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 25841 states and 39248 transitions. [2024-10-24 01:23:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:23:57,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:23:57,927 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:23:57,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:23:57,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:23:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:23:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1312970164, now seen corresponding path program 1 times [2024-10-24 01:23:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:23:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438752425] [2024-10-24 01:23:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:23:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:23:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:23:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:23:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:23:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438752425] [2024-10-24 01:23:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438752425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:23:58,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:23:58,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:23:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654211416] [2024-10-24 01:23:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:23:58,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:23:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:23:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:23:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:23:58,167 INFO L87 Difference]: Start difference. First operand 25841 states and 39248 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:23:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:23:59,107 INFO L93 Difference]: Finished difference Result 50495 states and 77255 transitions. [2024-10-24 01:23:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:23:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 107 [2024-10-24 01:23:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:23:59,190 INFO L225 Difference]: With dead ends: 50495 [2024-10-24 01:23:59,191 INFO L226 Difference]: Without dead ends: 46141 [2024-10-24 01:23:59,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:23:59,216 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 1313 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:23:59,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1525 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:23:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46141 states. [2024-10-24 01:24:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46141 to 30129. [2024-10-24 01:24:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.5188528943175783) internal successors, (45760), 30128 states have internal predecessors, (45760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45760 transitions. [2024-10-24 01:24:00,303 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45760 transitions. Word has length 107 [2024-10-24 01:24:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:00,304 INFO L471 AbstractCegarLoop]: Abstraction has 30129 states and 45760 transitions. [2024-10-24 01:24:00,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45760 transitions. [2024-10-24 01:24:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:24:00,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:00,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:00,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:24:00,314 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:00,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1733612164, now seen corresponding path program 1 times [2024-10-24 01:24:00,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:00,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518935230] [2024-10-24 01:24:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518935230] [2024-10-24 01:24:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518935230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:00,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:00,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772497107] [2024-10-24 01:24:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:00,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:00,491 INFO L87 Difference]: Start difference. First operand 30129 states and 45760 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:01,125 INFO L93 Difference]: Finished difference Result 60213 states and 91474 transitions. [2024-10-24 01:24:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-24 01:24:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:01,176 INFO L225 Difference]: With dead ends: 60213 [2024-10-24 01:24:01,177 INFO L226 Difference]: Without dead ends: 30131 [2024-10-24 01:24:01,219 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 [2024-10-24 01:24:01,219 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 81 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:01,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 355 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30131 states. [2024-10-24 01:24:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30131 to 30129. [2024-10-24 01:24:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.507700477960701) internal successors, (45424), 30128 states have internal predecessors, (45424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45424 transitions. [2024-10-24 01:24:02,003 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45424 transitions. Word has length 108 [2024-10-24 01:24:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:02,003 INFO L471 AbstractCegarLoop]: Abstraction has 30129 states and 45424 transitions. [2024-10-24 01:24:02,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45424 transitions. [2024-10-24 01:24:02,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:24:02,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:02,011 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:02,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:24:02,011 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:02,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1162383707, now seen corresponding path program 1 times [2024-10-24 01:24:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:02,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142554034] [2024-10-24 01:24:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:02,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142554034] [2024-10-24 01:24:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142554034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310292867] [2024-10-24 01:24:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:02,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:02,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:02,129 INFO L87 Difference]: Start difference. First operand 30129 states and 45424 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:02,370 INFO L93 Difference]: Finished difference Result 45173 states and 68114 transitions. [2024-10-24 01:24:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-10-24 01:24:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:02,397 INFO L225 Difference]: With dead ends: 45173 [2024-10-24 01:24:02,398 INFO L226 Difference]: Without dead ends: 15091 [2024-10-24 01:24:02,421 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 [2024-10-24 01:24:02,421 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 75 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:02,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 336 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:02,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2024-10-24 01:24:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 15089. [2024-10-24 01:24:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 15088 states have (on average 1.4957582184517497) internal successors, (22568), 15088 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 22568 transitions. [2024-10-24 01:24:02,877 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 22568 transitions. Word has length 108 [2024-10-24 01:24:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:02,877 INFO L471 AbstractCegarLoop]: Abstraction has 15089 states and 22568 transitions. [2024-10-24 01:24:02,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 22568 transitions. [2024-10-24 01:24:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:24:02,883 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:02,883 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:02,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:24:02,883 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:02,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 960971590, now seen corresponding path program 1 times [2024-10-24 01:24:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530049068] [2024-10-24 01:24:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:04,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:04,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530049068] [2024-10-24 01:24:04,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530049068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:04,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283601497] [2024-10-24 01:24:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:04,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:04,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:04,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:24:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:04,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 01:24:04,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:05,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283601497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:05,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:05,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 7] total 21 [2024-10-24 01:24:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939893043] [2024-10-24 01:24:05,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:05,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 01:24:05,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 01:24:05,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-24 01:24:05,774 INFO L87 Difference]: Start difference. First operand 15089 states and 22568 transitions. Second operand has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:26,105 INFO L93 Difference]: Finished difference Result 178325 states and 265048 transitions. [2024-10-24 01:24:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-10-24 01:24:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 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 108 [2024-10-24 01:24:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:26,319 INFO L225 Difference]: With dead ends: 178325 [2024-10-24 01:24:26,319 INFO L226 Difference]: Without dead ends: 168019 [2024-10-24 01:24:26,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19036 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5614, Invalid=37858, Unknown=0, NotChecked=0, Total=43472 [2024-10-24 01:24:26,368 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 8242 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8242 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:26,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8242 Valid, 2651 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 01:24:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168019 states. [2024-10-24 01:24:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168019 to 136653. [2024-10-24 01:24:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136653 states, 136652 states have (on average 1.4702455873313234) internal successors, (200912), 136652 states have internal predecessors, (200912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136653 states to 136653 states and 200912 transitions. [2024-10-24 01:24:30,594 INFO L78 Accepts]: Start accepts. Automaton has 136653 states and 200912 transitions. Word has length 108 [2024-10-24 01:24:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:30,594 INFO L471 AbstractCegarLoop]: Abstraction has 136653 states and 200912 transitions. [2024-10-24 01:24:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.19047619047619) internal successors, (319), 21 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 136653 states and 200912 transitions. [2024-10-24 01:24:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-24 01:24:30,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:30,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:30,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:24:30,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 01:24:30,800 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:30,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash -94093581, now seen corresponding path program 1 times [2024-10-24 01:24:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36228319] [2024-10-24 01:24:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:24:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36228319] [2024-10-24 01:24:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36228319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 01:24:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517681185] [2024-10-24 01:24:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:30,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 01:24:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 01:24:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:30,988 INFO L87 Difference]: Start difference. First operand 136653 states and 200912 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:36,405 INFO L93 Difference]: Finished difference Result 250087 states and 370021 transitions. [2024-10-24 01:24:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 01:24:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2024-10-24 01:24:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:36,725 INFO L225 Difference]: With dead ends: 250087 [2024-10-24 01:24:36,725 INFO L226 Difference]: Without dead ends: 232957 [2024-10-24 01:24:36,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:24:36,795 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 1166 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:36,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 2103 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232957 states. [2024-10-24 01:24:42,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232957 to 154389. [2024-10-24 01:24:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154389 states, 154388 states have (on average 1.4696090369717854) internal successors, (226890), 154388 states have internal predecessors, (226890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154389 states to 154389 states and 226890 transitions. [2024-10-24 01:24:42,394 INFO L78 Accepts]: Start accepts. Automaton has 154389 states and 226890 transitions. Word has length 109 [2024-10-24 01:24:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:42,395 INFO L471 AbstractCegarLoop]: Abstraction has 154389 states and 226890 transitions. [2024-10-24 01:24:42,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 154389 states and 226890 transitions. [2024-10-24 01:24:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-24 01:24:42,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:42,399 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:42,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:24:42,399 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:42,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:42,399 INFO L85 PathProgramCache]: Analyzing trace with hash -734798986, now seen corresponding path program 1 times [2024-10-24 01:24:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746920621] [2024-10-24 01:24:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:42,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746920621] [2024-10-24 01:24:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746920621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081436807] [2024-10-24 01:24:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:42,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:42,510 INFO L87 Difference]: Start difference. First operand 154389 states and 226890 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:44,914 INFO L93 Difference]: Finished difference Result 217124 states and 318312 transitions. [2024-10-24 01:24:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-10-24 01:24:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:44,993 INFO L225 Difference]: With dead ends: 217124 [2024-10-24 01:24:44,993 INFO L226 Difference]: Without dead ends: 62782 [2024-10-24 01:24:45,045 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 [2024-10-24 01:24:45,046 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 63 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:45,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62782 states. [2024-10-24 01:24:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62782 to 56428. [2024-10-24 01:24:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56428 states, 56427 states have (on average 1.4489162989349071) internal successors, (81758), 56427 states have internal predecessors, (81758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56428 states to 56428 states and 81758 transitions. [2024-10-24 01:24:46,762 INFO L78 Accepts]: Start accepts. Automaton has 56428 states and 81758 transitions. Word has length 110 [2024-10-24 01:24:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:46,762 INFO L471 AbstractCegarLoop]: Abstraction has 56428 states and 81758 transitions. [2024-10-24 01:24:46,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 56428 states and 81758 transitions. [2024-10-24 01:24:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-24 01:24:46,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:46,765 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:46,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:24:46,766 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:46,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1351270500, now seen corresponding path program 1 times [2024-10-24 01:24:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856025740] [2024-10-24 01:24:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:46,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:47,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856025740] [2024-10-24 01:24:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856025740] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306716012] [2024-10-24 01:24:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:47,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:47,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:47,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:24:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:47,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 01:24:47,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:48,170 INFO L311 TraceCheckSpWp]: Computing backward predicates...