./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:37:34,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:37:34,856 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:37:34,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:37:34,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:37:34,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:37:34,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:37:34,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:37:34,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:37:34,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:37:34,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:37:34,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:37:34,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:37:34,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:37:34,883 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:37:34,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:37:34,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:37:34,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:37:34,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:37:34,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:37:34,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:37:34,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:37:34,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:37:34,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:37:34,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:37:34,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:37:34,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:37:34,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:37:34,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:37:34,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:37:34,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:37:34,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:37:34,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:37:34,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:37:34,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:37:34,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:37:34,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:37:34,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:37:34,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:37:34,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:37:34,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:37:34,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:37:34,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2024-10-13 23:37:35,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:37:35,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:37:35,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:37:35,076 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:37:35,076 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:37:35,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-10-13 23:37:36,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:37:36,810 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:37:36,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2024-10-13 23:37:36,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2769293/b47e160a20ff462fa5139c03559fdad9/FLAGa954b035c [2024-10-13 23:37:36,853 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2769293/b47e160a20ff462fa5139c03559fdad9 [2024-10-13 23:37:36,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:37:36,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:37:36,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:37:36,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:37:36,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:37:36,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:37:36" (1/1) ... [2024-10-13 23:37:36,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2c5f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:36, skipping insertion in model container [2024-10-13 23:37:36,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:37:36" (1/1) ... [2024-10-13 23:37:36,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:37:37,134 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2024-10-13 23:37:37,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:37:37,798 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:37:37,813 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2024-10-13 23:37:38,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:37:38,222 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:37:38,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38 WrapperNode [2024-10-13 23:37:38,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:37:38,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:37:38,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:37:38,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:37:38,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:38,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:38,774 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-13 23:37:38,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:37:38,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:37:38,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:37:38,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:37:38,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:38,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:38,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,237 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]. [2024-10-13 23:37:39,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:37:39,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:37:39,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:37:39,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:37:39,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (1/1) ... [2024-10-13 23:37:39,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:37:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:37:39,538 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) [2024-10-13 23:37:39,541 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 [2024-10-13 23:37:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:37:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:37:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:37:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:37:39,636 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:37:39,638 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:37:44,059 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-13 23:37:44,059 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:37:44,112 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:37:44,113 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:37:44,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:37:44 BoogieIcfgContainer [2024-10-13 23:37:44,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:37:44,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:37:44,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:37:44,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:37:44,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:37:36" (1/3) ... [2024-10-13 23:37:44,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117960cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:37:44, skipping insertion in model container [2024-10-13 23:37:44,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:37:38" (2/3) ... [2024-10-13 23:37:44,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117960cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:37:44, skipping insertion in model container [2024-10-13 23:37:44,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:37:44" (3/3) ... [2024-10-13 23:37:44,120 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2024-10-13 23:37:44,132 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:37:44,132 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:37:44,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:37:44,212 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;@194e16cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:37:44,212 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:37:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:44,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 23:37:44,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:44,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:44,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:44,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2020490715, now seen corresponding path program 1 times [2024-10-13 23:37:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556861230] [2024-10-13 23:37:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:44,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556861230] [2024-10-13 23:37:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556861230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:44,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:37:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666618020] [2024-10-13 23:37:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:44,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:37:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:37:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:37:44,379 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:37:44,483 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-13 23:37:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:37:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-10-13 23:37:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:37:44,502 INFO L225 Difference]: With dead ends: 2071 [2024-10-13 23:37:44,502 INFO L226 Difference]: Without dead ends: 1034 [2024-10-13 23:37:44,507 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 [2024-10-13 23:37:44,509 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:37:44,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:37:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-13 23:37:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-13 23:37:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-13 23:37:44,584 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 12 [2024-10-13 23:37:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:37:44,585 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-13 23:37:44,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-13 23:37:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 23:37:44,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:44,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:44,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:37:44,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:44,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1470969184, now seen corresponding path program 1 times [2024-10-13 23:37:44,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:44,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932340437] [2024-10-13 23:37:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:44,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932340437] [2024-10-13 23:37:44,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932340437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:44,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:44,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:37:44,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733362965] [2024-10-13 23:37:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:44,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:37:44,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:37:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:44,655 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:37:48,448 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2024-10-13 23:37:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:37:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-10-13 23:37:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:37:48,456 INFO L225 Difference]: With dead ends: 3015 [2024-10-13 23:37:48,456 INFO L226 Difference]: Without dead ends: 1982 [2024-10-13 23:37:48,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:48,459 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 1042 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:37:48,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-13 23:37:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-13 23:37:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2024-10-13 23:37:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2024-10-13 23:37:48,491 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 12 [2024-10-13 23:37:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:37:48,492 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2024-10-13 23:37:48,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2024-10-13 23:37:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-13 23:37:48,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:48,495 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:48,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:37:48,496 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:48,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -783291765, now seen corresponding path program 1 times [2024-10-13 23:37:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748597398] [2024-10-13 23:37:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748597398] [2024-10-13 23:37:48,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748597398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:37:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486783734] [2024-10-13 23:37:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:48,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:37:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:37:48,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:48,693 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:37:52,105 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2024-10-13 23:37:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:37:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-13 23:37:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:37:52,116 INFO L225 Difference]: With dead ends: 5455 [2024-10-13 23:37:52,116 INFO L226 Difference]: Without dead ends: 3527 [2024-10-13 23:37:52,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:52,120 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:37:52,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-13 23:37:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-10-13 23:37:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2024-10-13 23:37:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2024-10-13 23:37:52,181 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 77 [2024-10-13 23:37:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:37:52,181 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2024-10-13 23:37:52,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2024-10-13 23:37:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-13 23:37:52,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:52,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:52,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:37:52,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:52,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 92943386, now seen corresponding path program 1 times [2024-10-13 23:37:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:52,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722530691] [2024-10-13 23:37:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722530691] [2024-10-13 23:37:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722530691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:52,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:52,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:37:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793722432] [2024-10-13 23:37:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:52,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:37:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:37:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:52,324 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:37:55,435 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2024-10-13 23:37:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:37:55,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-10-13 23:37:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:37:55,453 INFO L225 Difference]: With dead ends: 10231 [2024-10-13 23:37:55,453 INFO L226 Difference]: Without dead ends: 6707 [2024-10-13 23:37:55,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:55,460 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:37:55,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-13 23:37:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2024-10-13 23:37:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2024-10-13 23:37:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2024-10-13 23:37:55,546 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 83 [2024-10-13 23:37:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:37:55,548 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2024-10-13 23:37:55,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2024-10-13 23:37:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-13 23:37:55,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:55,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:55,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:37:55,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:55,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 694776805, now seen corresponding path program 1 times [2024-10-13 23:37:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515810868] [2024-10-13 23:37:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:55,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:55,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515810868] [2024-10-13 23:37:55,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515810868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:55,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:55,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:37:55,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403749645] [2024-10-13 23:37:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:55,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:37:55,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:37:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:55,743 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:37:59,194 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2024-10-13 23:37:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:37:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2024-10-13 23:37:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:37:59,218 INFO L225 Difference]: With dead ends: 17442 [2024-10-13 23:37:59,218 INFO L226 Difference]: Without dead ends: 10744 [2024-10-13 23:37:59,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:59,225 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:37:59,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-13 23:37:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2024-10-13 23:37:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2024-10-13 23:37:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2024-10-13 23:37:59,351 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 113 [2024-10-13 23:37:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:37:59,352 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2024-10-13 23:37:59,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:37:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2024-10-13 23:37:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-13 23:37:59,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:37:59,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:37:59,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:37:59,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:37:59,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:37:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1266460414, now seen corresponding path program 1 times [2024-10-13 23:37:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:37:59,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765137513] [2024-10-13 23:37:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:37:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:37:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:37:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:37:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:37:59,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765137513] [2024-10-13 23:37:59,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765137513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:37:59,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:37:59,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:37:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156472372] [2024-10-13 23:37:59,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:37:59,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:37:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:37:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:37:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:37:59,464 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:02,254 INFO L93 Difference]: Finished difference Result 30030 states and 41241 transitions. [2024-10-13 23:38:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-10-13 23:38:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:02,319 INFO L225 Difference]: With dead ends: 30030 [2024-10-13 23:38:02,323 INFO L226 Difference]: Without dead ends: 20150 [2024-10-13 23:38:02,347 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 [2024-10-13 23:38:02,352 INFO L432 NwaCegarLoop]: 1008 mSDtfsCounter, 852 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:02,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1158 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-13 23:38:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2024-10-13 23:38:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 18549. [2024-10-13 23:38:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18549 states, 18548 states have (on average 1.2524800517576018) internal successors, (23231), 18548 states have internal predecessors, (23231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:02,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18549 states to 18549 states and 23231 transitions. [2024-10-13 23:38:02,876 INFO L78 Accepts]: Start accepts. Automaton has 18549 states and 23231 transitions. Word has length 123 [2024-10-13 23:38:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:02,876 INFO L471 AbstractCegarLoop]: Abstraction has 18549 states and 23231 transitions. [2024-10-13 23:38:02,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18549 states and 23231 transitions. [2024-10-13 23:38:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-13 23:38:02,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:02,878 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:02,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:38:02,878 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:02,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash 474499067, now seen corresponding path program 1 times [2024-10-13 23:38:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:02,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159047555] [2024-10-13 23:38:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:38:03,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:03,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159047555] [2024-10-13 23:38:03,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159047555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:03,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:03,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:38:03,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487438215] [2024-10-13 23:38:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:03,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:03,224 INFO L87 Difference]: Start difference. First operand 18549 states and 23231 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:06,268 INFO L93 Difference]: Finished difference Result 44988 states and 55637 transitions. [2024-10-13 23:38:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-13 23:38:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:06,308 INFO L225 Difference]: With dead ends: 44988 [2024-10-13 23:38:06,308 INFO L226 Difference]: Without dead ends: 26440 [2024-10-13 23:38:06,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:06,330 INFO L432 NwaCegarLoop]: 1028 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:06,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1212 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-13 23:38:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2024-10-13 23:38:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2024-10-13 23:38:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.200779358353511) internal successors, (31739), 26432 states have internal predecessors, (31739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31739 transitions. [2024-10-13 23:38:06,555 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31739 transitions. Word has length 128 [2024-10-13 23:38:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:06,557 INFO L471 AbstractCegarLoop]: Abstraction has 26433 states and 31739 transitions. [2024-10-13 23:38:06,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31739 transitions. [2024-10-13 23:38:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-10-13 23:38:06,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:06,560 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:06,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:38:06,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:06,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash -11769409, now seen corresponding path program 1 times [2024-10-13 23:38:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139831008] [2024-10-13 23:38:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:38:06,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139831008] [2024-10-13 23:38:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139831008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:06,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:06,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480436976] [2024-10-13 23:38:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:06,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:06,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:06,687 INFO L87 Difference]: Start difference. First operand 26433 states and 31739 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:09,964 INFO L93 Difference]: Finished difference Result 72534 states and 87975 transitions. [2024-10-13 23:38:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2024-10-13 23:38:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:10,017 INFO L225 Difference]: With dead ends: 72534 [2024-10-13 23:38:10,018 INFO L226 Difference]: Without dead ends: 46102 [2024-10-13 23:38:10,039 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 [2024-10-13 23:38:10,040 INFO L432 NwaCegarLoop]: 1845 mSDtfsCounter, 840 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:10,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1981 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-13 23:38:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46102 states. [2024-10-13 23:38:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46102 to 42945. [2024-10-13 23:38:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1720612891207154) internal successors, (50333), 42944 states have internal predecessors, (50333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50333 transitions. [2024-10-13 23:38:10,526 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50333 transitions. Word has length 226 [2024-10-13 23:38:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:10,527 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50333 transitions. [2024-10-13 23:38:10,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50333 transitions. [2024-10-13 23:38:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-10-13 23:38:10,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:10,533 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:10,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:38:10,533 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:10,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1900895306, now seen corresponding path program 1 times [2024-10-13 23:38:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304851855] [2024-10-13 23:38:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 23:38:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304851855] [2024-10-13 23:38:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304851855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:10,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:10,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:38:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893525496] [2024-10-13 23:38:10,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:10,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:10,781 INFO L87 Difference]: Start difference. First operand 42945 states and 50333 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:13,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:13,429 INFO L93 Difference]: Finished difference Result 85102 states and 99868 transitions. [2024-10-13 23:38:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:13,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 232 [2024-10-13 23:38:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:13,470 INFO L225 Difference]: With dead ends: 85102 [2024-10-13 23:38:13,471 INFO L226 Difference]: Without dead ends: 42945 [2024-10-13 23:38:13,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:13,496 INFO L432 NwaCegarLoop]: 1062 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:13,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1191 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:38:13,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42945 states. [2024-10-13 23:38:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42945 to 42945. [2024-10-13 23:38:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1719448584202683) internal successors, (50328), 42944 states have internal predecessors, (50328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50328 transitions. [2024-10-13 23:38:14,195 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50328 transitions. Word has length 232 [2024-10-13 23:38:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:14,195 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50328 transitions. [2024-10-13 23:38:14,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50328 transitions. [2024-10-13 23:38:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-13 23:38:14,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:14,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:14,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:38:14,198 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:14,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash 785961759, now seen corresponding path program 1 times [2024-10-13 23:38:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822183862] [2024-10-13 23:38:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:38:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822183862] [2024-10-13 23:38:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822183862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:14,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:14,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:14,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605323365] [2024-10-13 23:38:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:14,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:14,316 INFO L87 Difference]: Start difference. First operand 42945 states and 50328 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:17,617 INFO L93 Difference]: Finished difference Result 104789 states and 124852 transitions. [2024-10-13 23:38:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-13 23:38:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:17,678 INFO L225 Difference]: With dead ends: 104789 [2024-10-13 23:38:17,678 INFO L226 Difference]: Without dead ends: 62632 [2024-10-13 23:38:17,698 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 [2024-10-13 23:38:17,699 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 824 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:17,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 926 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-13 23:38:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62632 states. [2024-10-13 23:38:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62632 to 61047. [2024-10-13 23:38:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61047 states, 61046 states have (on average 1.1611407790846247) internal successors, (70883), 61046 states have internal predecessors, (70883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61047 states to 61047 states and 70883 transitions. [2024-10-13 23:38:18,343 INFO L78 Accepts]: Start accepts. Automaton has 61047 states and 70883 transitions. Word has length 239 [2024-10-13 23:38:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:18,343 INFO L471 AbstractCegarLoop]: Abstraction has 61047 states and 70883 transitions. [2024-10-13 23:38:18,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 61047 states and 70883 transitions. [2024-10-13 23:38:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-13 23:38:18,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:18,346 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:38:18,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:38:18,347 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:18,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 804549123, now seen corresponding path program 1 times [2024-10-13 23:38:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916902078] [2024-10-13 23:38:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-13 23:38:18,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916902078] [2024-10-13 23:38:18,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916902078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:18,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:18,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896269378] [2024-10-13 23:38:18,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:18,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:18,537 INFO L87 Difference]: Start difference. First operand 61047 states and 70883 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:22,249 INFO L93 Difference]: Finished difference Result 133101 states and 156732 transitions. [2024-10-13 23:38:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 253 [2024-10-13 23:38:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:22,332 INFO L225 Difference]: With dead ends: 133101 [2024-10-13 23:38:22,332 INFO L226 Difference]: Without dead ends: 72842 [2024-10-13 23:38:22,355 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 [2024-10-13 23:38:22,356 INFO L432 NwaCegarLoop]: 1451 mSDtfsCounter, 1147 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:22,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1536 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-13 23:38:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72842 states. [2024-10-13 23:38:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72842 to 72841. [2024-10-13 23:38:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72841 states, 72840 states have (on average 1.1448380010982977) internal successors, (83390), 72840 states have internal predecessors, (83390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72841 states to 72841 states and 83390 transitions. [2024-10-13 23:38:23,074 INFO L78 Accepts]: Start accepts. Automaton has 72841 states and 83390 transitions. Word has length 253 [2024-10-13 23:38:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:23,074 INFO L471 AbstractCegarLoop]: Abstraction has 72841 states and 83390 transitions. [2024-10-13 23:38:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 72841 states and 83390 transitions. [2024-10-13 23:38:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-10-13 23:38:23,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:23,078 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:23,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:38:23,079 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:23,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2048121416, now seen corresponding path program 1 times [2024-10-13 23:38:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954056333] [2024-10-13 23:38:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 150 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 23:38:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954056333] [2024-10-13 23:38:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954056333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:38:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570530251] [2024-10-13 23:38:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:38:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:38:24,329 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) [2024-10-13 23:38:24,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:38:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:24,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:38:24,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:38:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-13 23:38:24,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:38:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570530251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:24,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:38:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-13 23:38:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879232572] [2024-10-13 23:38:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:24,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:38:24,576 INFO L87 Difference]: Start difference. First operand 72841 states and 83390 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:27,268 INFO L93 Difference]: Finished difference Result 144883 states and 165977 transitions. [2024-10-13 23:38:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 318 [2024-10-13 23:38:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:27,346 INFO L225 Difference]: With dead ends: 144883 [2024-10-13 23:38:27,346 INFO L226 Difference]: Without dead ends: 72830 [2024-10-13 23:38:27,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:38:27,366 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 1070 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:27,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 798 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-13 23:38:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72830 states. [2024-10-13 23:38:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72830 to 72827. [2024-10-13 23:38:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72827 states, 72826 states have (on average 1.105855051767226) internal successors, (80535), 72826 states have internal predecessors, (80535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72827 states to 72827 states and 80535 transitions. [2024-10-13 23:38:28,054 INFO L78 Accepts]: Start accepts. Automaton has 72827 states and 80535 transitions. Word has length 318 [2024-10-13 23:38:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:28,055 INFO L471 AbstractCegarLoop]: Abstraction has 72827 states and 80535 transitions. [2024-10-13 23:38:28,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 72827 states and 80535 transitions. [2024-10-13 23:38:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-13 23:38:28,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:28,059 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:38:28,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:38:28,260 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,SelfDestructingSolverStorable11 [2024-10-13 23:38:28,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:28,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1096251753, now seen corresponding path program 1 times [2024-10-13 23:38:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056374914] [2024-10-13 23:38:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-13 23:38:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056374914] [2024-10-13 23:38:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056374914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:28,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:28,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435824908] [2024-10-13 23:38:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:28,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:38:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:38:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:38:28,448 INFO L87 Difference]: Start difference. First operand 72827 states and 80535 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:34,643 INFO L93 Difference]: Finished difference Result 182816 states and 202180 transitions. [2024-10-13 23:38:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:38:34,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 360 [2024-10-13 23:38:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:34,775 INFO L225 Difference]: With dead ends: 182816 [2024-10-13 23:38:34,775 INFO L226 Difference]: Without dead ends: 110777 [2024-10-13 23:38:34,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:38:34,820 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 1687 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 5917 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 6913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 5917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:34,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 834 Invalid, 6913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 5917 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-13 23:38:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110777 states. [2024-10-13 23:38:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110777 to 88579. [2024-10-13 23:38:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88579 states, 88578 states have (on average 1.0960057802163066) internal successors, (97082), 88578 states have internal predecessors, (97082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88579 states to 88579 states and 97082 transitions. [2024-10-13 23:38:35,981 INFO L78 Accepts]: Start accepts. Automaton has 88579 states and 97082 transitions. Word has length 360 [2024-10-13 23:38:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:35,982 INFO L471 AbstractCegarLoop]: Abstraction has 88579 states and 97082 transitions. [2024-10-13 23:38:35,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 88579 states and 97082 transitions. [2024-10-13 23:38:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-10-13 23:38:35,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:35,994 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:35,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:38:35,995 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2137082976, now seen corresponding path program 1 times [2024-10-13 23:38:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:35,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874374783] [2024-10-13 23:38:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-13 23:38:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874374783] [2024-10-13 23:38:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874374783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:36,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861996847] [2024-10-13 23:38:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:36,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:36,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:36,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:36,487 INFO L87 Difference]: Start difference. First operand 88579 states and 97082 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:40,034 INFO L93 Difference]: Finished difference Result 200764 states and 220693 transitions. [2024-10-13 23:38:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 373 [2024-10-13 23:38:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:40,153 INFO L225 Difference]: With dead ends: 200764 [2024-10-13 23:38:40,153 INFO L226 Difference]: Without dead ends: 112973 [2024-10-13 23:38:40,357 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 [2024-10-13 23:38:40,361 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 816 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:40,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 831 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-13 23:38:40,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112973 states. [2024-10-13 23:38:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112973 to 111385. [2024-10-13 23:38:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111385 states, 111384 states have (on average 1.088064713064713) internal successors, (121193), 111384 states have internal predecessors, (121193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111385 states to 111385 states and 121193 transitions. [2024-10-13 23:38:41,897 INFO L78 Accepts]: Start accepts. Automaton has 111385 states and 121193 transitions. Word has length 373 [2024-10-13 23:38:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:41,897 INFO L471 AbstractCegarLoop]: Abstraction has 111385 states and 121193 transitions. [2024-10-13 23:38:41,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 111385 states and 121193 transitions. [2024-10-13 23:38:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-10-13 23:38:41,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:41,901 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:41,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:38:41,902 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:41,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 860470321, now seen corresponding path program 1 times [2024-10-13 23:38:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160328190] [2024-10-13 23:38:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:41,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 322 proven. 110 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-13 23:38:42,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160328190] [2024-10-13 23:38:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160328190] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:38:42,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429091566] [2024-10-13 23:38:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:42,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:38:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:38:42,854 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) [2024-10-13 23:38:42,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:38:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:42,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:38:42,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:38:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-10-13 23:38:43,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:38:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429091566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:43,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:38:43,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:38:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531376550] [2024-10-13 23:38:43,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:43,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:38:43,012 INFO L87 Difference]: Start difference. First operand 111385 states and 121193 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:45,779 INFO L93 Difference]: Finished difference Result 223556 states and 243179 transitions. [2024-10-13 23:38:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:45,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 403 [2024-10-13 23:38:45,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:45,903 INFO L225 Difference]: With dead ends: 223556 [2024-10-13 23:38:45,903 INFO L226 Difference]: Without dead ends: 112959 [2024-10-13 23:38:45,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:38:45,955 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 1022 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:45,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1462 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:38:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112959 states. [2024-10-13 23:38:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112959 to 111373. [2024-10-13 23:38:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111373 states, 111372 states have (on average 1.0647290162697984) internal successors, (118581), 111372 states have internal predecessors, (118581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111373 states to 111373 states and 118581 transitions. [2024-10-13 23:38:47,520 INFO L78 Accepts]: Start accepts. Automaton has 111373 states and 118581 transitions. Word has length 403 [2024-10-13 23:38:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:47,520 INFO L471 AbstractCegarLoop]: Abstraction has 111373 states and 118581 transitions. [2024-10-13 23:38:47,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 111373 states and 118581 transitions. [2024-10-13 23:38:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-13 23:38:47,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:47,528 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:47,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 23:38:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 23:38:47,730 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:47,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1379721120, now seen corresponding path program 1 times [2024-10-13 23:38:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:47,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673157606] [2024-10-13 23:38:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:47,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-13 23:38:48,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673157606] [2024-10-13 23:38:48,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673157606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:48,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:38:48,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:38:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381460559] [2024-10-13 23:38:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:48,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:38:48,380 INFO L87 Difference]: Start difference. First operand 111373 states and 118581 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:51,822 INFO L93 Difference]: Finished difference Result 245569 states and 262020 transitions. [2024-10-13 23:38:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:51,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 485 [2024-10-13 23:38:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:51,979 INFO L225 Difference]: With dead ends: 245569 [2024-10-13 23:38:51,979 INFO L226 Difference]: Without dead ends: 133410 [2024-10-13 23:38:52,316 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 [2024-10-13 23:38:52,321 INFO L432 NwaCegarLoop]: 1701 mSDtfsCounter, 697 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:52,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1834 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-13 23:38:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133410 states. [2024-10-13 23:38:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133410 to 133396. [2024-10-13 23:38:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133396 states, 133395 states have (on average 1.0564713819858316) internal successors, (140928), 133395 states have internal predecessors, (140928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133396 states to 133396 states and 140928 transitions. [2024-10-13 23:38:53,853 INFO L78 Accepts]: Start accepts. Automaton has 133396 states and 140928 transitions. Word has length 485 [2024-10-13 23:38:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:38:53,854 INFO L471 AbstractCegarLoop]: Abstraction has 133396 states and 140928 transitions. [2024-10-13 23:38:53,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 133396 states and 140928 transitions. [2024-10-13 23:38:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2024-10-13 23:38:53,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:38:53,863 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:38:53,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:38:53,863 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:38:53,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:38:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash 543532270, now seen corresponding path program 1 times [2024-10-13 23:38:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:38:53,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583883197] [2024-10-13 23:38:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:53,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:38:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 262 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 23:38:55,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:38:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583883197] [2024-10-13 23:38:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583883197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:38:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326152474] [2024-10-13 23:38:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:38:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:38:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:38:55,046 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) [2024-10-13 23:38:55,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:38:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:38:55,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:38:55,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:38:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-13 23:38:55,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:38:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326152474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:38:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:38:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:38:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832661869] [2024-10-13 23:38:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:38:55,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:38:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:38:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:38:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:38:55,223 INFO L87 Difference]: Start difference. First operand 133396 states and 140928 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:38:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:38:58,838 INFO L93 Difference]: Finished difference Result 300702 states and 317956 transitions. [2024-10-13 23:38:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:38:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 508 [2024-10-13 23:38:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:38:59,054 INFO L225 Difference]: With dead ends: 300702 [2024-10-13 23:38:59,055 INFO L226 Difference]: Without dead ends: 168094 [2024-10-13 23:38:59,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:38:59,411 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1008 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:38:59,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 473 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-13 23:38:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168094 states. [2024-10-13 23:39:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168094 to 164094. [2024-10-13 23:39:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164094 states, 164093 states have (on average 1.057698987769131) internal successors, (173561), 164093 states have internal predecessors, (173561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:39:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164094 states to 164094 states and 173561 transitions. [2024-10-13 23:39:01,176 INFO L78 Accepts]: Start accepts. Automaton has 164094 states and 173561 transitions. Word has length 508 [2024-10-13 23:39:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:39:01,176 INFO L471 AbstractCegarLoop]: Abstraction has 164094 states and 173561 transitions. [2024-10-13 23:39:01,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:39:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 164094 states and 173561 transitions. [2024-10-13 23:39:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2024-10-13 23:39:01,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:39:01,197 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:39:01,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:39:01,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:39:01,398 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:39:01,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:39:01,399 INFO L85 PathProgramCache]: Analyzing trace with hash -340890750, now seen corresponding path program 1 times [2024-10-13 23:39:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:39:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678900486] [2024-10-13 23:39:01,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:39:01,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:39:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:39:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 23:39:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:39:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678900486] [2024-10-13 23:39:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678900486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:39:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318965906] [2024-10-13 23:39:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:39:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:39:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:39:02,355 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) [2024-10-13 23:39:02,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:39:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:39:02,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:39:02,503 INFO L278 TraceCheckSpWp]: Computing forward predicates...