./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.3.1.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.3.1.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 66e52001defd7e771c0df8c73cdf4ec6b3d90072c8faf9f52fce6d45ff1a83e7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:24:02,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:24:02,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:24:02,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:24:02,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:24:03,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:24:03,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:24:03,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:24:03,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:24:03,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:24:03,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:24:03,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:24:03,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:24:03,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:24:03,004 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:24:03,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:24:03,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:24:03,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:24:03,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:24:03,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:24:03,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:24:03,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:24:03,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:24:03,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:24:03,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:24:03,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:24:03,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:24:03,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:24:03,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:24:03,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:24:03,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66e52001defd7e771c0df8c73cdf4ec6b3d90072c8faf9f52fce6d45ff1a83e7 [2024-10-24 01:24:03,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:24:03,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:24:03,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:24:03,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:24:03,254 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:24:03,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:24:04,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:24:04,688 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:24:04,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:24:04,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67bd889f/3885a959d1ab43d286927de85eb75af8/FLAG4d5dd0355 [2024-10-24 01:24:04,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67bd889f/3885a959d1ab43d286927de85eb75af8 [2024-10-24 01:24:04,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:24:04,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:24:04,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:24:04,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:24:04,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:24:04,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:24:04" (1/1) ... [2024-10-24 01:24:04,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f0dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:04, skipping insertion in model container [2024-10-24 01:24:04,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:24:04" (1/1) ... [2024-10-24 01:24:04,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:24:04,926 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.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2024-10-24 01:24:04,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:24:04,945 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:24:04,987 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.3.1.ufo.UNBOUNDED.pals.c[6080,6093] [2024-10-24 01:24:04,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:24:05,007 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:24:05,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05 WrapperNode [2024-10-24 01:24:05,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:24:05,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:24:05,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:24:05,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:24:05,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,064 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 223 [2024-10-24 01:24:05,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:24:05,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:24:05,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:24:05,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:24:05,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,099 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 01:24:05,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:24:05,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:24:05,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:24:05,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:24:05,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (1/1) ... [2024-10-24 01:24:05,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:24:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:05,149 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 01:24:05,152 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 01:24:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:24:05,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:24:05,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:24:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:24:05,287 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:24:05,289 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:24:05,589 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-10-24 01:24:05,589 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:24:05,627 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:24:05,628 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:24:05,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:05 BoogieIcfgContainer [2024-10-24 01:24:05,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:24:05,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:24:05,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:24:05,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:24:05,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:24:04" (1/3) ... [2024-10-24 01:24:05,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fdd684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:05, skipping insertion in model container [2024-10-24 01:24:05,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:05" (2/3) ... [2024-10-24 01:24:05,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fdd684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:05, skipping insertion in model container [2024-10-24 01:24:05,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:05" (3/3) ... [2024-10-24 01:24:05,636 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c [2024-10-24 01:24:05,649 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:24:05,649 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:24:05,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:24:05,702 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;@6b090846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:24:05,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:24:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 01:24:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-24 01:24:05,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:05,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:05,715 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:05,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1356555257, now seen corresponding path program 1 times [2024-10-24 01:24:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118309316] [2024-10-24 01:24:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:05,919 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 01:24:05,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118309316] [2024-10-24 01:24:05,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118309316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:05,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:05,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:24:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971486850] [2024-10-24 01:24:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:05,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:24:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:24:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:24:05,949 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 52 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 01:24:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:05,975 INFO L93 Difference]: Finished difference Result 85 states and 143 transitions. [2024-10-24 01:24:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:24:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-24 01:24:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:05,987 INFO L225 Difference]: With dead ends: 85 [2024-10-24 01:24:05,988 INFO L226 Difference]: Without dead ends: 51 [2024-10-24 01:24:05,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:24:05,994 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:05,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-24 01:24:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-24 01:24:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.7) internal successors, (85), 50 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 01:24:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2024-10-24 01:24:06,020 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 16 [2024-10-24 01:24:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:06,021 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2024-10-24 01:24:06,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 01:24:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2024-10-24 01:24:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-24 01:24:06,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:06,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:06,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:24:06,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:06,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 769749243, now seen corresponding path program 1 times [2024-10-24 01:24:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776422477] [2024-10-24 01:24:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:06,163 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 01:24:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776422477] [2024-10-24 01:24:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776422477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:24:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881941937] [2024-10-24 01:24:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:06,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:24:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:24:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:06,169 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 01:24:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:06,212 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2024-10-24 01:24:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:24:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-24 01:24:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:06,214 INFO L225 Difference]: With dead ends: 85 [2024-10-24 01:24:06,214 INFO L226 Difference]: Without dead ends: 51 [2024-10-24 01:24:06,214 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 01:24:06,215 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:06,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-24 01:24:06,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-24 01:24:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 01:24:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-10-24 01:24:06,220 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 16 [2024-10-24 01:24:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:06,221 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-10-24 01:24:06,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 01:24:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-10-24 01:24:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-24 01:24:06,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:06,224 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] [2024-10-24 01:24:06,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:24:06,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:06,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 84756620, now seen corresponding path program 1 times [2024-10-24 01:24:06,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:06,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474968689] [2024-10-24 01:24:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:06,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:06,394 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 01:24:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474968689] [2024-10-24 01:24:06,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474968689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:24:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001956202] [2024-10-24 01:24:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:06,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:24:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:24:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:24:06,397 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 01:24:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:06,520 INFO L93 Difference]: Finished difference Result 237 states and 363 transitions. [2024-10-24 01:24:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:24:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-10-24 01:24:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:06,522 INFO L225 Difference]: With dead ends: 237 [2024-10-24 01:24:06,522 INFO L226 Difference]: Without dead ends: 206 [2024-10-24 01:24:06,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:24:06,523 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 318 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:06,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 332 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-10-24 01:24:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 80. [2024-10-24 01:24:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2024-10-24 01:24:06,542 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 31 [2024-10-24 01:24:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:06,542 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2024-10-24 01:24:06,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 01:24:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2024-10-24 01:24:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 01:24:06,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:06,543 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] [2024-10-24 01:24:06,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:24:06,543 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:06,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash -912973924, now seen corresponding path program 1 times [2024-10-24 01:24:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745830406] [2024-10-24 01:24:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:06,678 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 01:24:06,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745830406] [2024-10-24 01:24:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745830406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:06,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:06,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:06,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849330031] [2024-10-24 01:24:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:06,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:06,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:06,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:06,680 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 01:24:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:06,705 INFO L93 Difference]: Finished difference Result 189 states and 286 transitions. [2024-10-24 01:24:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:06,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-10-24 01:24:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:06,706 INFO L225 Difference]: With dead ends: 189 [2024-10-24 01:24:06,706 INFO L226 Difference]: Without dead ends: 129 [2024-10-24 01:24:06,707 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 01:24:06,707 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:06,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 103 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-24 01:24:06,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-10-24 01:24:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 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 01:24:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2024-10-24 01:24:06,723 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 33 [2024-10-24 01:24:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:06,723 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2024-10-24 01:24:06,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 01:24:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2024-10-24 01:24:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 01:24:06,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:06,726 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] [2024-10-24 01:24:06,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:24:06,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:06,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -910828972, now seen corresponding path program 1 times [2024-10-24 01:24:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578014671] [2024-10-24 01:24:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:06,873 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 01:24:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578014671] [2024-10-24 01:24:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578014671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:24:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223765197] [2024-10-24 01:24:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:06,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:24:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:24:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:24:06,878 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 01:24:06,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:06,935 INFO L93 Difference]: Finished difference Result 232 states and 347 transitions. [2024-10-24 01:24:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:24:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-10-24 01:24:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:06,937 INFO L225 Difference]: With dead ends: 232 [2024-10-24 01:24:06,937 INFO L226 Difference]: Without dead ends: 127 [2024-10-24 01:24:06,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:24:06,939 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:06,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 150 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-10-24 01:24:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-10-24 01:24:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 124 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 01:24:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2024-10-24 01:24:06,948 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 33 [2024-10-24 01:24:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:06,948 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2024-10-24 01:24:06,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 01:24:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2024-10-24 01:24:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:24:06,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:06,949 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 01:24:06,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:24:06,949 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:06,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1815029063, now seen corresponding path program 1 times [2024-10-24 01:24:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674494485] [2024-10-24 01:24:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,066 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 01:24:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674494485] [2024-10-24 01:24:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674494485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:24:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639612565] [2024-10-24 01:24:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:24:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:24:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:07,070 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. 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 01:24:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,091 INFO L93 Difference]: Finished difference Result 131 states and 188 transitions. [2024-10-24 01:24:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:24:07,091 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 01:24:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,092 INFO L225 Difference]: With dead ends: 131 [2024-10-24 01:24:07,092 INFO L226 Difference]: Without dead ends: 129 [2024-10-24 01:24:07,092 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 01:24:07,093 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-24 01:24:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-10-24 01:24:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4375) internal successors, (184), 128 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 01:24:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 184 transitions. [2024-10-24 01:24:07,106 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 184 transitions. Word has length 34 [2024-10-24 01:24:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,107 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 184 transitions. [2024-10-24 01:24:07,107 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 01:24:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 184 transitions. [2024-10-24 01:24:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 01:24:07,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:07,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:24:07,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1381419564, now seen corresponding path program 1 times [2024-10-24 01:24:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431155132] [2024-10-24 01:24:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,171 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 01:24:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431155132] [2024-10-24 01:24:07,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431155132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641723238] [2024-10-24 01:24:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:07,173 INFO L87 Difference]: Start difference. First operand 129 states and 184 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,194 INFO L93 Difference]: Finished difference Result 331 states and 484 transitions. [2024-10-24 01:24:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:07,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-24 01:24:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,199 INFO L225 Difference]: With dead ends: 331 [2024-10-24 01:24:07,200 INFO L226 Difference]: Without dead ends: 222 [2024-10-24 01:24:07,200 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 01:24:07,201 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 144 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-10-24 01:24:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2024-10-24 01:24:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4383561643835616) internal successors, (315), 219 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 01:24:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 315 transitions. [2024-10-24 01:24:07,219 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 315 transitions. Word has length 35 [2024-10-24 01:24:07,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,223 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 315 transitions. [2024-10-24 01:24:07,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 315 transitions. [2024-10-24 01:24:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 01:24:07,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:07,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:24:07,225 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash -492686124, now seen corresponding path program 1 times [2024-10-24 01:24:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513276843] [2024-10-24 01:24:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,271 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 01:24:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513276843] [2024-10-24 01:24:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513276843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375910124] [2024-10-24 01:24:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:07,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:07,273 INFO L87 Difference]: Start difference. First operand 220 states and 315 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,292 INFO L93 Difference]: Finished difference Result 588 states and 849 transitions. [2024-10-24 01:24:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:07,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-24 01:24:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,294 INFO L225 Difference]: With dead ends: 588 [2024-10-24 01:24:07,294 INFO L226 Difference]: Without dead ends: 388 [2024-10-24 01:24:07,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:07,296 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 35 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 146 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-24 01:24:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2024-10-24 01:24:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.4155844155844155) internal successors, (545), 385 states have internal predecessors, (545), 0 states have call successors, (0), 0 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 01:24:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 545 transitions. [2024-10-24 01:24:07,313 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 545 transitions. Word has length 35 [2024-10-24 01:24:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,314 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 545 transitions. [2024-10-24 01:24:07,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:07,314 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 545 transitions. [2024-10-24 01:24:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 01:24:07,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,315 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] [2024-10-24 01:24:07,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:24:07,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1137438489, now seen corresponding path program 1 times [2024-10-24 01:24:07,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273663692] [2024-10-24 01:24:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,363 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 01:24:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273663692] [2024-10-24 01:24:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273663692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657037531] [2024-10-24 01:24:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:07,365 INFO L87 Difference]: Start difference. First operand 386 states and 545 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 01:24:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,390 INFO L93 Difference]: Finished difference Result 777 states and 1119 transitions. [2024-10-24 01:24:07,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:07,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-10-24 01:24:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,395 INFO L225 Difference]: With dead ends: 777 [2024-10-24 01:24:07,395 INFO L226 Difference]: Without dead ends: 558 [2024-10-24 01:24:07,395 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 01:24:07,396 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 36 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-10-24 01:24:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 556. [2024-10-24 01:24:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.4108108108108108) internal successors, (783), 555 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 01:24:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 783 transitions. [2024-10-24 01:24:07,414 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 783 transitions. Word has length 37 [2024-10-24 01:24:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,414 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 783 transitions. [2024-10-24 01:24:07,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 01:24:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 783 transitions. [2024-10-24 01:24:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:24:07,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,415 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:07,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:24:07,416 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash 124429978, now seen corresponding path program 1 times [2024-10-24 01:24:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696430337] [2024-10-24 01:24:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:24:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696430337] [2024-10-24 01:24:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696430337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:24:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376017252] [2024-10-24 01:24:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:24:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:24:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:24:07,520 INFO L87 Difference]: Start difference. First operand 556 states and 783 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 01:24:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,595 INFO L93 Difference]: Finished difference Result 2280 states and 3231 transitions. [2024-10-24 01:24:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:24:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 49 [2024-10-24 01:24:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,601 INFO L225 Difference]: With dead ends: 2280 [2024-10-24 01:24:07,601 INFO L226 Difference]: Without dead ends: 1746 [2024-10-24 01:24:07,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:24:07,603 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 172 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 265 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2024-10-24 01:24:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1088. [2024-10-24 01:24:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.408463661453542) internal successors, (1531), 1087 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 01:24:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1531 transitions. [2024-10-24 01:24:07,660 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1531 transitions. Word has length 49 [2024-10-24 01:24:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,660 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1531 transitions. [2024-10-24 01:24:07,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 01:24:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1531 transitions. [2024-10-24 01:24:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 01:24:07,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,661 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:07,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:24:07,662 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1013163418, now seen corresponding path program 1 times [2024-10-24 01:24:07,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602701051] [2024-10-24 01:24:07,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:24:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602701051] [2024-10-24 01:24:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602701051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:24:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189939654] [2024-10-24 01:24:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:24:07,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:24:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:24:07,764 INFO L87 Difference]: Start difference. First operand 1088 states and 1531 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 01:24:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:07,851 INFO L93 Difference]: Finished difference Result 2812 states and 3979 transitions. [2024-10-24 01:24:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:24:07,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 49 [2024-10-24 01:24:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:07,859 INFO L225 Difference]: With dead ends: 2812 [2024-10-24 01:24:07,860 INFO L226 Difference]: Without dead ends: 2278 [2024-10-24 01:24:07,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:24:07,861 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 173 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:07,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 262 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2024-10-24 01:24:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1888. [2024-10-24 01:24:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.4006359300476947) internal successors, (2643), 1887 states have internal predecessors, (2643), 0 states have call successors, (0), 0 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 01:24:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2643 transitions. [2024-10-24 01:24:07,909 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2643 transitions. Word has length 49 [2024-10-24 01:24:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:07,910 INFO L471 AbstractCegarLoop]: Abstraction has 1888 states and 2643 transitions. [2024-10-24 01:24:07,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 01:24:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2643 transitions. [2024-10-24 01:24:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:24:07,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:07,911 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] [2024-10-24 01:24:07,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:24:07,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:07,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1439437598, now seen corresponding path program 1 times [2024-10-24 01:24:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761432993] [2024-10-24 01:24:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:07,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761432993] [2024-10-24 01:24:07,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761432993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:07,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:07,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:07,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048492468] [2024-10-24 01:24:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:07,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:07,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:07,977 INFO L87 Difference]: Start difference. First operand 1888 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 01:24:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:08,034 INFO L93 Difference]: Finished difference Result 3251 states and 4593 transitions. [2024-10-24 01:24:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-24 01:24:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:08,039 INFO L225 Difference]: With dead ends: 3251 [2024-10-24 01:24:08,039 INFO L226 Difference]: Without dead ends: 1385 [2024-10-24 01:24:08,040 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 01:24:08,041 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:08,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 143 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2024-10-24 01:24:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1383. [2024-10-24 01:24:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.4052098408104197) internal successors, (1942), 1382 states have internal predecessors, (1942), 0 states have call successors, (0), 0 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 01:24:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1942 transitions. [2024-10-24 01:24:08,070 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1942 transitions. Word has length 51 [2024-10-24 01:24:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:08,070 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 1942 transitions. [2024-10-24 01:24:08,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 01:24:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1942 transitions. [2024-10-24 01:24:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 01:24:08,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:08,071 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:08,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:24:08,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:08,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 854869599, now seen corresponding path program 1 times [2024-10-24 01:24:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957092156] [2024-10-24 01:24:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:24:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:08,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957092156] [2024-10-24 01:24:08,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957092156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:08,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:24:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959851548] [2024-10-24 01:24:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:08,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:24:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:24:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:24:08,140 INFO L87 Difference]: Start difference. First operand 1383 states and 1942 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 01:24:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:08,222 INFO L93 Difference]: Finished difference Result 2543 states and 3602 transitions. [2024-10-24 01:24:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:24:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 51 [2024-10-24 01:24:08,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:08,228 INFO L225 Difference]: With dead ends: 2543 [2024-10-24 01:24:08,228 INFO L226 Difference]: Without dead ends: 2157 [2024-10-24 01:24:08,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:24:08,230 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 167 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:08,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 286 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2024-10-24 01:24:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1767. [2024-10-24 01:24:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.407701019252548) internal successors, (2486), 1766 states have internal predecessors, (2486), 0 states have call successors, (0), 0 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 01:24:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2486 transitions. [2024-10-24 01:24:08,274 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2486 transitions. Word has length 51 [2024-10-24 01:24:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:08,274 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2486 transitions. [2024-10-24 01:24:08,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 01:24:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2486 transitions. [2024-10-24 01:24:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:24:08,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:08,275 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] [2024-10-24 01:24:08,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:24:08,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:08,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1284392075, now seen corresponding path program 1 times [2024-10-24 01:24:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890337958] [2024-10-24 01:24:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:08,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:08,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:08,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890337958] [2024-10-24 01:24:08,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890337958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:08,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:08,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47766699] [2024-10-24 01:24:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:08,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:08,354 INFO L87 Difference]: Start difference. First operand 1767 states and 2486 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 01:24:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:08,379 INFO L93 Difference]: Finished difference Result 2635 states and 3712 transitions. [2024-10-24 01:24:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-24 01:24:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:08,382 INFO L225 Difference]: With dead ends: 2635 [2024-10-24 01:24:08,382 INFO L226 Difference]: Without dead ends: 905 [2024-10-24 01:24:08,383 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 01:24:08,384 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:08,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 128 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-10-24 01:24:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 903. [2024-10-24 01:24:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 1.3791574279379157) internal successors, (1244), 902 states have internal predecessors, (1244), 0 states have call successors, (0), 0 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 01:24:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1244 transitions. [2024-10-24 01:24:08,404 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1244 transitions. Word has length 52 [2024-10-24 01:24:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:08,404 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1244 transitions. [2024-10-24 01:24:08,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 01:24:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1244 transitions. [2024-10-24 01:24:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:08,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:08,405 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:08,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:24:08,405 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:08,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2034831399, now seen corresponding path program 1 times [2024-10-24 01:24:08,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:08,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493815633] [2024-10-24 01:24:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:08,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:08,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493815633] [2024-10-24 01:24:08,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493815633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:08,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:08,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176818914] [2024-10-24 01:24:08,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:08,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:08,462 INFO L87 Difference]: Start difference. First operand 903 states and 1244 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 01:24:08,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:08,485 INFO L93 Difference]: Finished difference Result 1339 states and 1849 transitions. [2024-10-24 01:24:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:08,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:08,488 INFO L225 Difference]: With dead ends: 1339 [2024-10-24 01:24:08,488 INFO L226 Difference]: Without dead ends: 473 [2024-10-24 01:24:08,490 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 01:24:08,491 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 26 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:08,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-10-24 01:24:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2024-10-24 01:24:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3446808510638297) internal successors, (632), 470 states have internal predecessors, (632), 0 states have call successors, (0), 0 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 01:24:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 632 transitions. [2024-10-24 01:24:08,503 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 632 transitions. Word has length 54 [2024-10-24 01:24:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:08,503 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 632 transitions. [2024-10-24 01:24:08,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 01:24:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 632 transitions. [2024-10-24 01:24:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 01:24:08,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:08,504 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:08,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:24:08,504 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:08,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1368007847, now seen corresponding path program 1 times [2024-10-24 01:24:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018065769] [2024-10-24 01:24:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:08,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018065769] [2024-10-24 01:24:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018065769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:09,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83606042] [2024-10-24 01:24:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:09,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:09,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:09,906 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 01:24:09,908 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 01:24:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:09,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 01:24:09,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:24:10,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:24:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83606042] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:10,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 4] total 17 [2024-10-24 01:24:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517879837] [2024-10-24 01:24:10,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:10,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 01:24:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 01:24:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-24 01:24:10,318 INFO L87 Difference]: Start difference. First operand 471 states and 632 transitions. Second operand has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 01:24:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:12,759 INFO L93 Difference]: Finished difference Result 2544 states and 3395 transitions. [2024-10-24 01:24:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-24 01:24:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 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 56 [2024-10-24 01:24:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:12,766 INFO L225 Difference]: With dead ends: 2544 [2024-10-24 01:24:12,766 INFO L226 Difference]: Without dead ends: 2110 [2024-10-24 01:24:12,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=596, Invalid=2596, Unknown=0, NotChecked=0, Total=3192 [2024-10-24 01:24:12,768 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 703 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:12,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 606 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:24:12,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2024-10-24 01:24:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2032. [2024-10-24 01:24:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2031 states have (on average 1.2693254554406697) internal successors, (2578), 2031 states have internal predecessors, (2578), 0 states have call successors, (0), 0 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 01:24:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2578 transitions. [2024-10-24 01:24:12,827 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2578 transitions. Word has length 56 [2024-10-24 01:24:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:12,827 INFO L471 AbstractCegarLoop]: Abstraction has 2032 states and 2578 transitions. [2024-10-24 01:24:12,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 01:24:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2578 transitions. [2024-10-24 01:24:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 01:24:12,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:12,828 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:12,842 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 01:24:13,032 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,SelfDestructingSolverStorable15 [2024-10-24 01:24:13,033 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:13,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1095679797, now seen corresponding path program 1 times [2024-10-24 01:24:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624545153] [2024-10-24 01:24:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624545153] [2024-10-24 01:24:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624545153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855150798] [2024-10-24 01:24:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:13,343 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 01:24:13,344 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 01:24:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:13,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 01:24:13,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:13,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855150798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:14,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-24 01:24:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238532204] [2024-10-24 01:24:14,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:14,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 01:24:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 01:24:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-10-24 01:24:14,127 INFO L87 Difference]: Start difference. First operand 2032 states and 2578 transitions. Second operand has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 01:24:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:14,480 INFO L93 Difference]: Finished difference Result 3421 states and 4376 transitions. [2024-10-24 01:24:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 01:24:14,480 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 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 57 [2024-10-24 01:24:14,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:14,485 INFO L225 Difference]: With dead ends: 3421 [2024-10-24 01:24:14,486 INFO L226 Difference]: Without dead ends: 2138 [2024-10-24 01:24:14,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2024-10-24 01:24:14,488 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 676 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:14,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 391 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:24:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2024-10-24 01:24:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2084. [2024-10-24 01:24:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.2592414786365818) internal successors, (2623), 2083 states have internal predecessors, (2623), 0 states have call successors, (0), 0 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 01:24:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2623 transitions. [2024-10-24 01:24:14,550 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2623 transitions. Word has length 57 [2024-10-24 01:24:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:14,550 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 2623 transitions. [2024-10-24 01:24:14,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 01:24:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2623 transitions. [2024-10-24 01:24:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 01:24:14,552 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:14,552 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:14,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 01:24:14,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 01:24:14,753 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:14,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash -389389031, now seen corresponding path program 1 times [2024-10-24 01:24:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:14,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666297993] [2024-10-24 01:24:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:14,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:14,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666297993] [2024-10-24 01:24:14,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666297993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:14,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273667731] [2024-10-24 01:24:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:14,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:14,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:14,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:24:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:15,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 01:24:15,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:15,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273667731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:16,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:16,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 27 [2024-10-24 01:24:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325245325] [2024-10-24 01:24:16,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:16,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 01:24:16,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 01:24:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-10-24 01:24:16,010 INFO L87 Difference]: Start difference. First operand 2084 states and 2623 transitions. Second operand has 28 states, 28 states have (on average 5.535714285714286) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 01:24:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:16,478 INFO L93 Difference]: Finished difference Result 5872 states and 7447 transitions. [2024-10-24 01:24:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 01:24:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.535714285714286) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 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 57 [2024-10-24 01:24:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:16,490 INFO L225 Difference]: With dead ends: 5872 [2024-10-24 01:24:16,491 INFO L226 Difference]: Without dead ends: 4102 [2024-10-24 01:24:16,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1255, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 01:24:16,493 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 469 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:16,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 548 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:24:16,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2024-10-24 01:24:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4030. [2024-10-24 01:24:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 4029 states have (on average 1.2412509307520476) internal successors, (5001), 4029 states have internal predecessors, (5001), 0 states have call successors, (0), 0 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 01:24:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5001 transitions. [2024-10-24 01:24:16,592 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5001 transitions. Word has length 57 [2024-10-24 01:24:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:16,592 INFO L471 AbstractCegarLoop]: Abstraction has 4030 states and 5001 transitions. [2024-10-24 01:24:16,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.535714285714286) internal successors, (155), 27 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 01:24:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5001 transitions. [2024-10-24 01:24:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 01:24:16,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:16,593 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:16,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 01:24:16,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 01:24:16,794 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:16,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:16,794 INFO L85 PathProgramCache]: Analyzing trace with hash 351125273, now seen corresponding path program 1 times [2024-10-24 01:24:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:16,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269418465] [2024-10-24 01:24:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:16,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:16,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269418465] [2024-10-24 01:24:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269418465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576369402] [2024-10-24 01:24:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:16,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:16,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:16,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 01:24:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:17,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-24 01:24:17,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:19,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576369402] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:20,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 17] total 39 [2024-10-24 01:24:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908465899] [2024-10-24 01:24:20,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:20,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-24 01:24:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-24 01:24:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 01:24:20,818 INFO L87 Difference]: Start difference. First operand 4030 states and 5001 transitions. Second operand has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:34,587 INFO L93 Difference]: Finished difference Result 10689 states and 13496 transitions. [2024-10-24 01:24:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-10-24 01:24:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 01:24:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:34,606 INFO L225 Difference]: With dead ends: 10689 [2024-10-24 01:24:34,606 INFO L226 Difference]: Without dead ends: 6982 [2024-10-24 01:24:34,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8847 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=4677, Invalid=20445, Unknown=0, NotChecked=0, Total=25122 [2024-10-24 01:24:34,614 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 2507 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:34,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2507 Valid, 2031 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 01:24:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2024-10-24 01:24:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6700. [2024-10-24 01:24:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.2546648753545304) internal successors, (8405), 6699 states have internal predecessors, (8405), 0 states have call successors, (0), 0 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 01:24:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 8405 transitions. [2024-10-24 01:24:34,875 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 8405 transitions. Word has length 57 [2024-10-24 01:24:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:34,875 INFO L471 AbstractCegarLoop]: Abstraction has 6700 states and 8405 transitions. [2024-10-24 01:24:34,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 8405 transitions. [2024-10-24 01:24:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 01:24:34,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:34,876 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:24:34,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 01:24:35,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:35,077 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:35,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1808659035, now seen corresponding path program 1 times [2024-10-24 01:24:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285019498] [2024-10-24 01:24:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285019498] [2024-10-24 01:24:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285019498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062827490] [2024-10-24 01:24:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:36,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:36,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:36,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 01:24:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:36,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 01:24:36,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:36,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:38,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062827490] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:38,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:38,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 16] total 48 [2024-10-24 01:24:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317757052] [2024-10-24 01:24:38,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:38,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-24 01:24:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-24 01:24:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2024-10-24 01:24:38,802 INFO L87 Difference]: Start difference. First operand 6700 states and 8405 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 48 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 01:24:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:53,289 INFO L93 Difference]: Finished difference Result 14961 states and 18848 transitions. [2024-10-24 01:24:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-24 01:24:53,290 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 48 states have internal predecessors, (156), 0 states have call successors, (0), 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 59 [2024-10-24 01:24:53,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:53,306 INFO L225 Difference]: With dead ends: 14961 [2024-10-24 01:24:53,306 INFO L226 Difference]: Without dead ends: 10836 [2024-10-24 01:24:53,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5915 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=4190, Invalid=16402, Unknown=0, NotChecked=0, Total=20592 [2024-10-24 01:24:53,315 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 2125 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:53,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2450 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-24 01:24:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10836 states. [2024-10-24 01:24:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10836 to 4771. [2024-10-24 01:24:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4771 states, 4770 states have (on average 1.2639412997903563) internal successors, (6029), 4770 states have internal predecessors, (6029), 0 states have call successors, (0), 0 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 01:24:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6029 transitions. [2024-10-24 01:24:53,607 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6029 transitions. Word has length 59 [2024-10-24 01:24:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:53,607 INFO L471 AbstractCegarLoop]: Abstraction has 4771 states and 6029 transitions. [2024-10-24 01:24:53,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 48 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 01:24:53,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6029 transitions. [2024-10-24 01:24:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-24 01:24:53,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:53,610 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-24 01:24:53,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 01:24:53,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:53,811 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:53,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -795044466, now seen corresponding path program 1 times [2024-10-24 01:24:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903142399] [2024-10-24 01:24:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 27 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903142399] [2024-10-24 01:24:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903142399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010840840] [2024-10-24 01:24:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:54,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:54,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:54,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 01:24:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:54,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 01:24:54,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:24:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:54,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:24:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 27 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:56,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010840840] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:24:56,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:24:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2024-10-24 01:24:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959733142] [2024-10-24 01:24:56,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:24:56,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 01:24:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 01:24:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-10-24 01:24:56,116 INFO L87 Difference]: Start difference. First operand 4771 states and 6029 transitions. Second operand has 30 states, 30 states have (on average 7.733333333333333) internal successors, (232), 29 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:58,318 INFO L93 Difference]: Finished difference Result 16831 states and 21500 transitions. [2024-10-24 01:24:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-24 01:24:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.733333333333333) internal successors, (232), 29 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-10-24 01:24:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:58,336 INFO L225 Difference]: With dead ends: 16831 [2024-10-24 01:24:58,336 INFO L226 Difference]: Without dead ends: 12409 [2024-10-24 01:24:58,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1400, Invalid=5406, Unknown=0, NotChecked=0, Total=6806 [2024-10-24 01:24:58,345 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1531 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:58,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1199 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:24:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12409 states. [2024-10-24 01:24:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12409 to 6347. [2024-10-24 01:24:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6347 states, 6346 states have (on average 1.247399936968169) internal successors, (7916), 6346 states have internal predecessors, (7916), 0 states have call successors, (0), 0 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 01:24:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 7916 transitions. [2024-10-24 01:24:58,698 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 7916 transitions. Word has length 96 [2024-10-24 01:24:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:58,698 INFO L471 AbstractCegarLoop]: Abstraction has 6347 states and 7916 transitions. [2024-10-24 01:24:58,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.733333333333333) internal successors, (232), 29 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 7916 transitions. [2024-10-24 01:24:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-24 01:24:58,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:58,700 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 01:24:58,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 01:24:58,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:58,901 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:58,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash -88753700, now seen corresponding path program 1 times [2024-10-24 01:24:58,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:58,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099720693] [2024-10-24 01:24:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099720693] [2024-10-24 01:24:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099720693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:24:59,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853539295] [2024-10-24 01:24:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:24:59,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:59,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:24:59,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 01:24:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 01:24:59,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:00,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853539295] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:01,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2024-10-24 01:25:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525225685] [2024-10-24 01:25:01,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:01,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-24 01:25:01,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-24 01:25:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2024-10-24 01:25:01,038 INFO L87 Difference]: Start difference. First operand 6347 states and 7916 transitions. Second operand has 33 states, 33 states have (on average 7.545454545454546) internal successors, (249), 32 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:01,974 INFO L93 Difference]: Finished difference Result 9379 states and 11771 transitions. [2024-10-24 01:25:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 01:25:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.545454545454546) internal successors, (249), 32 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-10-24 01:25:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:01,985 INFO L225 Difference]: With dead ends: 9379 [2024-10-24 01:25:01,986 INFO L226 Difference]: Without dead ends: 6483 [2024-10-24 01:25:01,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=447, Invalid=1905, Unknown=0, NotChecked=0, Total=2352 [2024-10-24 01:25:01,991 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 1001 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:01,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 465 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:25:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2024-10-24 01:25:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3143. [2024-10-24 01:25:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 3142 states have (on average 1.2412476129853596) internal successors, (3900), 3142 states have internal predecessors, (3900), 0 states have call successors, (0), 0 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 01:25:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3900 transitions. [2024-10-24 01:25:02,185 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3900 transitions. Word has length 96 [2024-10-24 01:25:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:02,185 INFO L471 AbstractCegarLoop]: Abstraction has 3143 states and 3900 transitions. [2024-10-24 01:25:02,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.545454545454546) internal successors, (249), 32 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3900 transitions. [2024-10-24 01:25:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:25:02,190 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:02,190 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 01:25:02,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:02,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:02,394 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:02,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1867936502, now seen corresponding path program 1 times [2024-10-24 01:25:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:02,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022213201] [2024-10-24 01:25:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:02,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:03,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:03,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022213201] [2024-10-24 01:25:03,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022213201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:03,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887537938] [2024-10-24 01:25:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:03,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:03,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:03,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 01:25:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:03,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 01:25:03,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:05,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:07,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887537938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:07,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 53 [2024-10-24 01:25:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276116824] [2024-10-24 01:25:07,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:07,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-24 01:25:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-24 01:25:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2640, Unknown=0, NotChecked=0, Total=2862 [2024-10-24 01:25:07,364 INFO L87 Difference]: Start difference. First operand 3143 states and 3900 transitions. Second operand has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 53 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 01:25:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:23,391 INFO L93 Difference]: Finished difference Result 8603 states and 10697 transitions. [2024-10-24 01:25:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-10-24 01:25:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 53 states have internal predecessors, (269), 0 states have call successors, (0), 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 97 [2024-10-24 01:25:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:23,397 INFO L225 Difference]: With dead ends: 8603 [2024-10-24 01:25:23,397 INFO L226 Difference]: Without dead ends: 6505 [2024-10-24 01:25:23,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8062 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=5373, Invalid=24039, Unknown=0, NotChecked=0, Total=29412 [2024-10-24 01:25:23,400 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 3966 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:23,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 2580 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 01:25:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2024-10-24 01:25:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 3807. [2024-10-24 01:25:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3806 states have (on average 1.2243825538623228) internal successors, (4660), 3806 states have internal predecessors, (4660), 0 states have call successors, (0), 0 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 01:25:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 4660 transitions. [2024-10-24 01:25:23,671 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 4660 transitions. Word has length 97 [2024-10-24 01:25:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:23,672 INFO L471 AbstractCegarLoop]: Abstraction has 3807 states and 4660 transitions. [2024-10-24 01:25:23,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 53 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 01:25:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 4660 transitions. [2024-10-24 01:25:23,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:25:23,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:23,673 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-24 01:25:23,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:23,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-24 01:25:23,875 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:23,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 298934788, now seen corresponding path program 1 times [2024-10-24 01:25:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202361829] [2024-10-24 01:25:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:24,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202361829] [2024-10-24 01:25:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202361829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299330884] [2024-10-24 01:25:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:24,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:24,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:24,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 01:25:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:24,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 01:25:24,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:25,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299330884] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:26,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:26,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2024-10-24 01:25:26,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646803299] [2024-10-24 01:25:26,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:26,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 01:25:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 01:25:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2024-10-24 01:25:26,055 INFO L87 Difference]: Start difference. First operand 3807 states and 4660 transitions. Second operand has 32 states, 32 states have (on average 7.09375) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 01:25:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:27,402 INFO L93 Difference]: Finished difference Result 10291 states and 12643 transitions. [2024-10-24 01:25:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 01:25:27,402 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.09375) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 97 [2024-10-24 01:25:27,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:27,410 INFO L225 Difference]: With dead ends: 10291 [2024-10-24 01:25:27,410 INFO L226 Difference]: Without dead ends: 7205 [2024-10-24 01:25:27,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=770, Invalid=2770, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 01:25:27,414 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 906 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:27,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 925 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:25:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7205 states. [2024-10-24 01:25:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7205 to 3625. [2024-10-24 01:25:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3624 states have (on average 1.2113686534216335) internal successors, (4390), 3624 states have internal predecessors, (4390), 0 states have call successors, (0), 0 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 01:25:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 4390 transitions. [2024-10-24 01:25:27,694 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 4390 transitions. Word has length 97 [2024-10-24 01:25:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:27,694 INFO L471 AbstractCegarLoop]: Abstraction has 3625 states and 4390 transitions. [2024-10-24 01:25:27,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.09375) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 01:25:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 4390 transitions. [2024-10-24 01:25:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 01:25:27,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:27,695 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:27,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:27,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 01:25:27,900 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:27,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1153958946, now seen corresponding path program 1 times [2024-10-24 01:25:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461543236] [2024-10-24 01:25:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461543236] [2024-10-24 01:25:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461543236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189064726] [2024-10-24 01:25:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:28,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:28,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 01:25:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:29,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 01:25:29,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:32,342 INFO L311 TraceCheckSpWp]: Computing backward predicates...