./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/eca-rers2012/Problem17_label21.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 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 17:17:19,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 17:17:19,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 17:17:19,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 17:17:19,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 17:17:19,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 17:17:19,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 17:17:19,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 17:17:19,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 17:17:19,149 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 17:17:19,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 17:17:19,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 17:17:19,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 17:17:19,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 17:17:19,152 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 17:17:19,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 17:17:19,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 17:17:19,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 17:17:19,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 17:17:19,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 17:17:19,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 17:17:19,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 17:17:19,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 17:17:19,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 17:17:19,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 17:17:19,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 17:17:19,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 17:17:19,156 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 17:17:19,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 17:17:19,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 17:17:19,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 17:17:19,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 17:17:19,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:17:19,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 17:17:19,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 17:17:19,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 17:17:19,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 17:17:19,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 17:17:19,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 17:17:19,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 17:17:19,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 17:17:19,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 17:17:19,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 094be3bd22098479b0cd50c57f93c246c7d8c744192a211aacece1f30e4af2db [2024-11-11 17:17:19,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 17:17:19,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 17:17:19,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 17:17:19,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 17:17:19,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 17:17:19,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-11-11 17:17:20,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 17:17:20,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 17:17:20,995 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label21.c [2024-11-11 17:17:21,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c056aca8e/ebc625f6a00848a3bad7a99d625a97c3/FLAG73de61bd2 [2024-11-11 17:17:21,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c056aca8e/ebc625f6a00848a3bad7a99d625a97c3 [2024-11-11 17:17:21,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 17:17:21,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 17:17:21,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 17:17:21,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 17:17:21,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 17:17:21,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:17:21" (1/1) ... [2024-11-11 17:17:21,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3875adcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:21, skipping insertion in model container [2024-11-11 17:17:21,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:17:21" (1/1) ... [2024-11-11 17:17:21,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 17:17:21,352 WARN L250 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/Problem17_label21.c[8748,8761] [2024-11-11 17:17:21,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:17:21,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 17:17:21,805 WARN L250 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/Problem17_label21.c[8748,8761] [2024-11-11 17:17:21,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:17:22,014 INFO L204 MainTranslator]: Completed translation [2024-11-11 17:17:22,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22 WrapperNode [2024-11-11 17:17:22,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 17:17:22,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 17:17:22,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 17:17:22,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 17:17:22,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,331 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-11 17:17:22,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 17:17:22,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 17:17:22,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 17:17:22,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 17:17:22,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,529 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]. [2024-11-11 17:17:22,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 17:17:22,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 17:17:22,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 17:17:22,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 17:17:22,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (1/1) ... [2024-11-11 17:17:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:17:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:17:22,764 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) [2024-11-11 17:17:22,766 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 [2024-11-11 17:17:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 17:17:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 17:17:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 17:17:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 17:17:22,868 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 17:17:22,870 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 17:17:25,381 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-11 17:17:25,381 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 17:17:25,408 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 17:17:25,408 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 17:17:25,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:17:25 BoogieIcfgContainer [2024-11-11 17:17:25,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 17:17:25,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 17:17:25,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 17:17:25,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 17:17:25,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 05:17:21" (1/3) ... [2024-11-11 17:17:25,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131652e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:17:25, skipping insertion in model container [2024-11-11 17:17:25,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:17:22" (2/3) ... [2024-11-11 17:17:25,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131652e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:17:25, skipping insertion in model container [2024-11-11 17:17:25,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:17:25" (3/3) ... [2024-11-11 17:17:25,417 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21.c [2024-11-11 17:17:25,431 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 17:17:25,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 17:17:25,501 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 17:17:25,507 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;@54ce3e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 17:17:25,508 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 17:17:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-11 17:17:25,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:25,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:25,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:25,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2024-11-11 17:17:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054102493] [2024-11-11 17:17:25,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:17:25,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054102493] [2024-11-11 17:17:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054102493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:25,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:17:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523481983] [2024-11-11 17:17:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:25,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:25,892 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:27,944 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-11 17:17:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-11 17:17:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:27,960 INFO L225 Difference]: With dead ends: 1644 [2024-11-11 17:17:27,960 INFO L226 Difference]: Without dead ends: 977 [2024-11-11 17:17:27,964 INFO L434 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 [2024-11-11 17:17:27,966 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 429 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:27,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 17:17:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-11 17:17:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-11 17:17:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-11 17:17:28,047 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 59 [2024-11-11 17:17:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:28,048 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-11 17:17:28,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-11 17:17:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-11 17:17:28,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:28,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:28,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 17:17:28,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:28,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1204082166, now seen corresponding path program 1 times [2024-11-11 17:17:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:28,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201118258] [2024-11-11 17:17:28,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:28,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:17:28,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201118258] [2024-11-11 17:17:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201118258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:28,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:28,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:17:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209627137] [2024-11-11 17:17:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:28,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:28,225 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:30,118 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-11 17:17:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-11 17:17:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:30,125 INFO L225 Difference]: With dead ends: 2813 [2024-11-11 17:17:30,125 INFO L226 Difference]: Without dead ends: 1844 [2024-11-11 17:17:30,128 INFO L434 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 [2024-11-11 17:17:30,130 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:30,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-11 17:17:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-11 17:17:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-11 17:17:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-11 17:17:30,170 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 126 [2024-11-11 17:17:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:30,171 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-11 17:17:30,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-11 17:17:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-11 17:17:30,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:30,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:30,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 17:17:30,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:30,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1960864468, now seen corresponding path program 1 times [2024-11-11 17:17:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853874057] [2024-11-11 17:17:30,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:17:30,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:30,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853874057] [2024-11-11 17:17:30,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853874057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:30,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:30,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315915481] [2024-11-11 17:17:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:30,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:30,363 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:32,153 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2024-11-11 17:17:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2024-11-11 17:17:32,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:32,162 INFO L225 Difference]: With dead ends: 4552 [2024-11-11 17:17:32,162 INFO L226 Difference]: Without dead ends: 2713 [2024-11-11 17:17:32,164 INFO L434 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 [2024-11-11 17:17:32,165 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 448 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:32,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 17:17:32,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-11 17:17:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-11 17:17:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2024-11-11 17:17:32,202 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 129 [2024-11-11 17:17:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:32,202 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2024-11-11 17:17:32,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2024-11-11 17:17:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-11 17:17:32,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:32,208 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:32,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 17:17:32,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:32,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:32,209 INFO L85 PathProgramCache]: Analyzing trace with hash -52331556, now seen corresponding path program 1 times [2024-11-11 17:17:32,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:32,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084469177] [2024-11-11 17:17:32,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-11 17:17:32,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084469177] [2024-11-11 17:17:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084469177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:32,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:17:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540718448] [2024-11-11 17:17:32,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:32,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:32,410 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:33,883 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2024-11-11 17:17:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:33,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 198 [2024-11-11 17:17:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:33,894 INFO L225 Difference]: With dead ends: 7984 [2024-11-11 17:17:33,894 INFO L226 Difference]: Without dead ends: 4421 [2024-11-11 17:17:33,900 INFO L434 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 [2024-11-11 17:17:33,901 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:33,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 17:17:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-11-11 17:17:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2024-11-11 17:17:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2024-11-11 17:17:33,950 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 198 [2024-11-11 17:17:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:33,951 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2024-11-11 17:17:33,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2024-11-11 17:17:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-11 17:17:33,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:33,953 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:17:33,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 17:17:33,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:33,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash -651132738, now seen corresponding path program 1 times [2024-11-11 17:17:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241048263] [2024-11-11 17:17:33,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:17:34,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:34,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241048263] [2024-11-11 17:17:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241048263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:34,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284470962] [2024-11-11 17:17:34,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:34,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:34,144 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:35,539 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2024-11-11 17:17:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:35,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-11 17:17:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:35,552 INFO L225 Difference]: With dead ends: 9273 [2024-11-11 17:17:35,552 INFO L226 Difference]: Without dead ends: 5704 [2024-11-11 17:17:35,556 INFO L434 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 [2024-11-11 17:17:35,559 INFO L435 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:35,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2024-11-11 17:17:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2024-11-11 17:17:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2024-11-11 17:17:35,638 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 211 [2024-11-11 17:17:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:35,638 INFO L471 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2024-11-11 17:17:35,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2024-11-11 17:17:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-11 17:17:35,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:35,641 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:17:35,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 17:17:35,641 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:35,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 668808547, now seen corresponding path program 1 times [2024-11-11 17:17:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448448499] [2024-11-11 17:17:35,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-11 17:17:35,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448448499] [2024-11-11 17:17:35,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448448499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135149259] [2024-11-11 17:17:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:35,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:35,782 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:37,124 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2024-11-11 17:17:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 213 [2024-11-11 17:17:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:37,147 INFO L225 Difference]: With dead ends: 14376 [2024-11-11 17:17:37,148 INFO L226 Difference]: Without dead ends: 8673 [2024-11-11 17:17:37,151 INFO L434 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 [2024-11-11 17:17:37,152 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 392 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:37,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2024-11-11 17:17:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2024-11-11 17:17:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2024-11-11 17:17:37,229 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 213 [2024-11-11 17:17:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:37,229 INFO L471 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2024-11-11 17:17:37,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2024-11-11 17:17:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-11 17:17:37,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:37,236 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:37,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 17:17:37,237 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:37,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1992117343, now seen corresponding path program 1 times [2024-11-11 17:17:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59726381] [2024-11-11 17:17:37,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-11 17:17:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59726381] [2024-11-11 17:17:37,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59726381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372081892] [2024-11-11 17:17:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:37,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:37,409 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:38,804 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2024-11-11 17:17:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:38,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-11 17:17:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:38,826 INFO L225 Difference]: With dead ends: 14315 [2024-11-11 17:17:38,826 INFO L226 Difference]: Without dead ends: 7790 [2024-11-11 17:17:38,830 INFO L434 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 [2024-11-11 17:17:38,831 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:38,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2024-11-11 17:17:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2024-11-11 17:17:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2024-11-11 17:17:38,941 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 291 [2024-11-11 17:17:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:38,941 INFO L471 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2024-11-11 17:17:38,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2024-11-11 17:17:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-11 17:17:38,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:38,947 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:38,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 17:17:38,948 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:38,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash -899235588, now seen corresponding path program 1 times [2024-11-11 17:17:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039093839] [2024-11-11 17:17:38,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-11 17:17:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039093839] [2024-11-11 17:17:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039093839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:39,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479225979] [2024-11-11 17:17:39,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:39,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:39,191 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:40,558 INFO L93 Difference]: Finished difference Result 18559 states and 20913 transitions. [2024-11-11 17:17:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:40,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 331 [2024-11-11 17:17:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:40,583 INFO L225 Difference]: With dead ends: 18559 [2024-11-11 17:17:40,583 INFO L226 Difference]: Without dead ends: 10771 [2024-11-11 17:17:40,590 INFO L434 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 [2024-11-11 17:17:40,591 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 413 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:40,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 402 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2024-11-11 17:17:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9916. [2024-11-11 17:17:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.119415027735754) internal successors, (11099), 9915 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11099 transitions. [2024-11-11 17:17:40,730 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11099 transitions. Word has length 331 [2024-11-11 17:17:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:40,730 INFO L471 AbstractCegarLoop]: Abstraction has 9916 states and 11099 transitions. [2024-11-11 17:17:40,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11099 transitions. [2024-11-11 17:17:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-11 17:17:40,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:40,737 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:40,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 17:17:40,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:40,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1830021804, now seen corresponding path program 1 times [2024-11-11 17:17:40,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:40,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658902983] [2024-11-11 17:17:40,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:17:40,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658902983] [2024-11-11 17:17:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658902983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:40,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004607942] [2024-11-11 17:17:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:40,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:17:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:17:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:17:41,001 INFO L87 Difference]: Start difference. First operand 9916 states and 11099 transitions. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:42,917 INFO L93 Difference]: Finished difference Result 26239 states and 29414 transitions. [2024-11-11 17:17:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:17:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 398 [2024-11-11 17:17:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:42,943 INFO L225 Difference]: With dead ends: 26239 [2024-11-11 17:17:42,943 INFO L226 Difference]: Without dead ends: 15900 [2024-11-11 17:17:42,952 INFO L434 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 [2024-11-11 17:17:42,953 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 616 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:42,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 197 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-11 17:17:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2024-11-11 17:17:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 15898. [2024-11-11 17:17:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 15897 states have (on average 1.1247405170786942) internal successors, (17880), 15897 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 17880 transitions. [2024-11-11 17:17:43,135 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 17880 transitions. Word has length 398 [2024-11-11 17:17:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:43,135 INFO L471 AbstractCegarLoop]: Abstraction has 15898 states and 17880 transitions. [2024-11-11 17:17:43,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 17880 transitions. [2024-11-11 17:17:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-11 17:17:43,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:43,145 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:43,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 17:17:43,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:43,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:43,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1181357117, now seen corresponding path program 1 times [2024-11-11 17:17:43,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:43,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74884639] [2024-11-11 17:17:43,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:43,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-11 17:17:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:43,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74884639] [2024-11-11 17:17:43,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74884639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:43,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478063998] [2024-11-11 17:17:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:43,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:43,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:43,330 INFO L87 Difference]: Start difference. First operand 15898 states and 17880 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:44,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:44,764 INFO L93 Difference]: Finished difference Result 44148 states and 49784 transitions. [2024-11-11 17:17:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 432 [2024-11-11 17:17:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:44,804 INFO L225 Difference]: With dead ends: 44148 [2024-11-11 17:17:44,804 INFO L226 Difference]: Without dead ends: 28252 [2024-11-11 17:17:44,819 INFO L434 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 [2024-11-11 17:17:44,820 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 495 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:44,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 289 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2024-11-11 17:17:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 26958. [2024-11-11 17:17:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26958 states, 26957 states have (on average 1.120525281003079) internal successors, (30206), 26957 states have internal predecessors, (30206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26958 states to 26958 states and 30206 transitions. [2024-11-11 17:17:45,088 INFO L78 Accepts]: Start accepts. Automaton has 26958 states and 30206 transitions. Word has length 432 [2024-11-11 17:17:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:45,090 INFO L471 AbstractCegarLoop]: Abstraction has 26958 states and 30206 transitions. [2024-11-11 17:17:45,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 26958 states and 30206 transitions. [2024-11-11 17:17:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-11 17:17:45,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:45,105 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:45,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 17:17:45,106 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:45,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1065401893, now seen corresponding path program 1 times [2024-11-11 17:17:45,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:45,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288311395] [2024-11-11 17:17:45,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:17:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288311395] [2024-11-11 17:17:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288311395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:45,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:45,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:17:45,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701431173] [2024-11-11 17:17:45,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:45,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:17:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:17:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:17:45,960 INFO L87 Difference]: Start difference. First operand 26958 states and 30206 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:48,040 INFO L93 Difference]: Finished difference Result 67545 states and 75867 transitions. [2024-11-11 17:17:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:17:48,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 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 494 [2024-11-11 17:17:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:48,092 INFO L225 Difference]: With dead ends: 67545 [2024-11-11 17:17:48,092 INFO L226 Difference]: Without dead ends: 40589 [2024-11-11 17:17:48,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:17:48,116 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 652 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:48,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 372 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 17:17:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40589 states. [2024-11-11 17:17:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40589 to 36743. [2024-11-11 17:17:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36743 states, 36742 states have (on average 1.1217952207283217) internal successors, (41217), 36742 states have internal predecessors, (41217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36743 states to 36743 states and 41217 transitions. [2024-11-11 17:17:48,532 INFO L78 Accepts]: Start accepts. Automaton has 36743 states and 41217 transitions. Word has length 494 [2024-11-11 17:17:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:48,534 INFO L471 AbstractCegarLoop]: Abstraction has 36743 states and 41217 transitions. [2024-11-11 17:17:48,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 36743 states and 41217 transitions. [2024-11-11 17:17:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-11 17:17:48,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:48,556 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:48,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 17:17:48,556 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:48,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1598319857, now seen corresponding path program 1 times [2024-11-11 17:17:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663859728] [2024-11-11 17:17:48,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-11 17:17:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663859728] [2024-11-11 17:17:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663859728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:48,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720387881] [2024-11-11 17:17:48,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:48,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:48,811 INFO L87 Difference]: Start difference. First operand 36743 states and 41217 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:50,216 INFO L93 Difference]: Finished difference Result 70927 states and 79518 transitions. [2024-11-11 17:17:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:50,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2024-11-11 17:17:50,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:50,258 INFO L225 Difference]: With dead ends: 70927 [2024-11-11 17:17:50,258 INFO L226 Difference]: Without dead ends: 34186 [2024-11-11 17:17:50,277 INFO L434 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 [2024-11-11 17:17:50,277 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 433 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:50,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 346 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 17:17:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34186 states. [2024-11-11 17:17:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34186 to 32054. [2024-11-11 17:17:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32054 states, 32053 states have (on average 1.1198639752909243) internal successors, (35895), 32053 states have internal predecessors, (35895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32054 states to 32054 states and 35895 transitions. [2024-11-11 17:17:50,570 INFO L78 Accepts]: Start accepts. Automaton has 32054 states and 35895 transitions. Word has length 502 [2024-11-11 17:17:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:50,570 INFO L471 AbstractCegarLoop]: Abstraction has 32054 states and 35895 transitions. [2024-11-11 17:17:50,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 32054 states and 35895 transitions. [2024-11-11 17:17:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-11 17:17:50,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:50,590 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:50,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 17:17:50,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:50,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1392248039, now seen corresponding path program 1 times [2024-11-11 17:17:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:50,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21293061] [2024-11-11 17:17:50,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-11 17:17:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21293061] [2024-11-11 17:17:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21293061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:17:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290402578] [2024-11-11 17:17:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:51,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:17:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:17:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:17:51,303 INFO L87 Difference]: Start difference. First operand 32054 states and 35895 transitions. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:53,589 INFO L93 Difference]: Finished difference Result 78606 states and 87589 transitions. [2024-11-11 17:17:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:17:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 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 626 [2024-11-11 17:17:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:53,625 INFO L225 Difference]: With dead ends: 78606 [2024-11-11 17:17:53,625 INFO L226 Difference]: Without dead ends: 44854 [2024-11-11 17:17:53,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:17:53,639 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 558 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:53,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 281 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 17:17:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44854 states. [2024-11-11 17:17:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44854 to 44400. [2024-11-11 17:17:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44400 states, 44399 states have (on average 1.112705241109034) internal successors, (49403), 44399 states have internal predecessors, (49403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44400 states to 44400 states and 49403 transitions. [2024-11-11 17:17:53,983 INFO L78 Accepts]: Start accepts. Automaton has 44400 states and 49403 transitions. Word has length 626 [2024-11-11 17:17:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:53,984 INFO L471 AbstractCegarLoop]: Abstraction has 44400 states and 49403 transitions. [2024-11-11 17:17:53,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 44400 states and 49403 transitions. [2024-11-11 17:17:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-11 17:17:54,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:54,005 INFO L218 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:54,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 17:17:54,005 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:54,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1773124669, now seen corresponding path program 1 times [2024-11-11 17:17:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:54,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702207428] [2024-11-11 17:17:54,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-11 17:17:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702207428] [2024-11-11 17:17:54,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702207428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:54,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455539733] [2024-11-11 17:17:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:54,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:54,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:54,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:54,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:54,741 INFO L87 Difference]: Start difference. First operand 44400 states and 49403 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:55,975 INFO L93 Difference]: Finished difference Result 88792 states and 98798 transitions. [2024-11-11 17:17:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:55,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 626 [2024-11-11 17:17:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:56,014 INFO L225 Difference]: With dead ends: 88792 [2024-11-11 17:17:56,014 INFO L226 Difference]: Without dead ends: 44394 [2024-11-11 17:17:56,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:56,031 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 571 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:56,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 578 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-11 17:17:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44394 states. [2024-11-11 17:17:56,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44394 to 44393. [2024-11-11 17:17:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44393 states, 44392 states have (on average 1.111867003063615) internal successors, (49358), 44392 states have internal predecessors, (49358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44393 states to 44393 states and 49358 transitions. [2024-11-11 17:17:56,408 INFO L78 Accepts]: Start accepts. Automaton has 44393 states and 49358 transitions. Word has length 626 [2024-11-11 17:17:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:56,409 INFO L471 AbstractCegarLoop]: Abstraction has 44393 states and 49358 transitions. [2024-11-11 17:17:56,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 44393 states and 49358 transitions. [2024-11-11 17:17:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-11-11 17:17:56,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:56,427 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:56,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 17:17:56,427 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:56,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1662969585, now seen corresponding path program 1 times [2024-11-11 17:17:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283992884] [2024-11-11 17:17:56,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:56,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-11 17:17:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:56,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283992884] [2024-11-11 17:17:56,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283992884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:17:56,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:17:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:17:56,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184697677] [2024-11-11 17:17:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:17:56,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:17:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:17:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:17:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:17:56,834 INFO L87 Difference]: Start difference. First operand 44393 states and 49358 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:17:58,461 INFO L93 Difference]: Finished difference Result 95586 states and 106040 transitions. [2024-11-11 17:17:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:17:58,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 642 [2024-11-11 17:17:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:17:58,515 INFO L225 Difference]: With dead ends: 95586 [2024-11-11 17:17:58,516 INFO L226 Difference]: Without dead ends: 48634 [2024-11-11 17:17:58,548 INFO L434 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 [2024-11-11 17:17:58,549 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 446 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:17:58,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 844 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:17:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48634 states. [2024-11-11 17:17:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48634 to 46080. [2024-11-11 17:17:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46080 states, 46079 states have (on average 1.0976800711821002) internal successors, (50580), 46079 states have internal predecessors, (50580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46080 states to 46080 states and 50580 transitions. [2024-11-11 17:17:59,119 INFO L78 Accepts]: Start accepts. Automaton has 46080 states and 50580 transitions. Word has length 642 [2024-11-11 17:17:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:17:59,120 INFO L471 AbstractCegarLoop]: Abstraction has 46080 states and 50580 transitions. [2024-11-11 17:17:59,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:17:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 46080 states and 50580 transitions. [2024-11-11 17:17:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2024-11-11 17:17:59,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:17:59,141 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:17:59,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-11 17:17:59,141 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:17:59,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:17:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash 321848541, now seen corresponding path program 1 times [2024-11-11 17:17:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:17:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852529179] [2024-11-11 17:17:59,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:17:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 435 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-11 17:17:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:17:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852529179] [2024-11-11 17:17:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852529179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:17:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494754292] [2024-11-11 17:17:59,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:17:59,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:17:59,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:17:59,678 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) [2024-11-11 17:17:59,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 17:17:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:17:59,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 17:17:59,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:18:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 435 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-11 17:18:00,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 17:18:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-11 17:18:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494754292] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 17:18:00,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-11 17:18:00,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-11 17:18:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658254304] [2024-11-11 17:18:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:00,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:18:00,338 INFO L87 Difference]: Start difference. First operand 46080 states and 50580 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:02,610 INFO L93 Difference]: Finished difference Result 119842 states and 131835 transitions. [2024-11-11 17:18:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 674 [2024-11-11 17:18:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:02,694 INFO L225 Difference]: With dead ends: 119842 [2024-11-11 17:18:02,694 INFO L226 Difference]: Without dead ends: 72910 [2024-11-11 17:18:02,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1345 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:18:02,732 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 871 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:02,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 164 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 17:18:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72910 states. [2024-11-11 17:18:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72910 to 64399. [2024-11-11 17:18:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64399 states, 64398 states have (on average 1.0983415634025901) internal successors, (70731), 64398 states have internal predecessors, (70731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64399 states to 64399 states and 70731 transitions. [2024-11-11 17:18:03,518 INFO L78 Accepts]: Start accepts. Automaton has 64399 states and 70731 transitions. Word has length 674 [2024-11-11 17:18:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:03,518 INFO L471 AbstractCegarLoop]: Abstraction has 64399 states and 70731 transitions. [2024-11-11 17:18:03,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 64399 states and 70731 transitions. [2024-11-11 17:18:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2024-11-11 17:18:03,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:03,537 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:18:03,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-11 17:18:03,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 17:18:03,738 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:03,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash -891111486, now seen corresponding path program 1 times [2024-11-11 17:18:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:03,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767106493] [2024-11-11 17:18:03,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:03,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-11-11 17:18:03,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767106493] [2024-11-11 17:18:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767106493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:03,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057586170] [2024-11-11 17:18:03,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:03,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:03,950 INFO L87 Difference]: Start difference. First operand 64399 states and 70731 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:05,391 INFO L93 Difference]: Finished difference Result 139850 states and 153665 transitions. [2024-11-11 17:18:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 677 [2024-11-11 17:18:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:05,476 INFO L225 Difference]: With dead ends: 139850 [2024-11-11 17:18:05,477 INFO L226 Difference]: Without dead ends: 71622 [2024-11-11 17:18:05,767 INFO L434 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 [2024-11-11 17:18:05,772 INFO L435 NwaCegarLoop]: 658 mSDtfsCounter, 495 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:05,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 701 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 17:18:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71622 states. [2024-11-11 17:18:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71622 to 54146. [2024-11-11 17:18:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54146 states, 54145 states have (on average 1.0846800258564964) internal successors, (58730), 54145 states have internal predecessors, (58730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54146 states to 54146 states and 58730 transitions. [2024-11-11 17:18:06,603 INFO L78 Accepts]: Start accepts. Automaton has 54146 states and 58730 transitions. Word has length 677 [2024-11-11 17:18:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:06,604 INFO L471 AbstractCegarLoop]: Abstraction has 54146 states and 58730 transitions. [2024-11-11 17:18:06,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 54146 states and 58730 transitions. [2024-11-11 17:18:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2024-11-11 17:18:06,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:06,640 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:06,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-11 17:18:06,641 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:06,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1712345726, now seen corresponding path program 1 times [2024-11-11 17:18:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:06,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167348938] [2024-11-11 17:18:06,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:06,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 233 proven. 347 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-11 17:18:08,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167348938] [2024-11-11 17:18:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167348938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:18:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691904516] [2024-11-11 17:18:08,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:08,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:18:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:18:08,064 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) [2024-11-11 17:18:08,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 17:18:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:08,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 17:18:08,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:18:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 457 proven. 286 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:18:09,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 17:18:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 457 proven. 286 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-11 17:18:11,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691904516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 17:18:11,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 17:18:11,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2024-11-11 17:18:11,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982338544] [2024-11-11 17:18:11,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 17:18:11,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 17:18:11,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:11,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 17:18:11,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-11 17:18:11,767 INFO L87 Difference]: Start difference. First operand 54146 states and 58730 transitions. Second operand has 10 states, 10 states have (on average 144.1) internal successors, (1441), 10 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:15,568 INFO L93 Difference]: Finished difference Result 112707 states and 122076 transitions. [2024-11-11 17:18:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 17:18:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 144.1) internal successors, (1441), 10 states have internal predecessors, (1441), 0 states have call successors, (0), 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 815 [2024-11-11 17:18:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:15,633 INFO L225 Difference]: With dead ends: 112707 [2024-11-11 17:18:15,633 INFO L226 Difference]: Without dead ends: 58136 [2024-11-11 17:18:15,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1627 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-11-11 17:18:15,644 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 1434 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 6047 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 6779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 6047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:15,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 241 Invalid, 6779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 6047 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-11 17:18:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58136 states. [2024-11-11 17:18:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58136 to 54549. [2024-11-11 17:18:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54549 states, 54548 states have (on average 1.057545647869766) internal successors, (57687), 54548 states have internal predecessors, (57687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54549 states to 54549 states and 57687 transitions. [2024-11-11 17:18:16,158 INFO L78 Accepts]: Start accepts. Automaton has 54549 states and 57687 transitions. Word has length 815 [2024-11-11 17:18:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:16,159 INFO L471 AbstractCegarLoop]: Abstraction has 54549 states and 57687 transitions. [2024-11-11 17:18:16,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.1) internal successors, (1441), 10 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 54549 states and 57687 transitions. [2024-11-11 17:18:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2024-11-11 17:18:16,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:16,189 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 17:18:16,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 17:18:16,389 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,SelfDestructingSolverStorable17 [2024-11-11 17:18:16,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:16,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1225416634, now seen corresponding path program 1 times [2024-11-11 17:18:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338491079] [2024-11-11 17:18:16,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-11 17:18:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:17,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338491079] [2024-11-11 17:18:17,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338491079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:17,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:17,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:18:17,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936339538] [2024-11-11 17:18:17,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:17,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:17,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:17,346 INFO L87 Difference]: Start difference. First operand 54549 states and 57687 transitions. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:19,799 INFO L93 Difference]: Finished difference Result 129976 states and 137335 transitions. [2024-11-11 17:18:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 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 884 [2024-11-11 17:18:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:19,883 INFO L225 Difference]: With dead ends: 129976 [2024-11-11 17:18:19,883 INFO L226 Difference]: Without dead ends: 73727 [2024-11-11 17:18:19,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:19,897 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 603 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:19,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 155 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 17:18:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73727 states. [2024-11-11 17:18:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73727 to 64334. [2024-11-11 17:18:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64334 states, 64333 states have (on average 1.058103927999627) internal successors, (68071), 64333 states have internal predecessors, (68071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64334 states to 64334 states and 68071 transitions. [2024-11-11 17:18:20,673 INFO L78 Accepts]: Start accepts. Automaton has 64334 states and 68071 transitions. Word has length 884 [2024-11-11 17:18:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:20,674 INFO L471 AbstractCegarLoop]: Abstraction has 64334 states and 68071 transitions. [2024-11-11 17:18:20,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 64334 states and 68071 transitions. [2024-11-11 17:18:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2024-11-11 17:18:20,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:20,707 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 17:18:20,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-11 17:18:20,707 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:20,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1994526173, now seen corresponding path program 1 times [2024-11-11 17:18:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904022446] [2024-11-11 17:18:20,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-11 17:18:21,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904022446] [2024-11-11 17:18:21,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904022446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:21,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:21,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:18:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889730960] [2024-11-11 17:18:21,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:21,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:18:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:21,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:18:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:18:21,559 INFO L87 Difference]: Start difference. First operand 64334 states and 68071 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:22,935 INFO L93 Difference]: Finished difference Result 134613 states and 142478 transitions. [2024-11-11 17:18:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:18:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 931 [2024-11-11 17:18:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:23,021 INFO L225 Difference]: With dead ends: 134613 [2024-11-11 17:18:23,021 INFO L226 Difference]: Without dead ends: 69425 [2024-11-11 17:18:23,068 INFO L434 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 [2024-11-11 17:18:23,068 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 498 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:23,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 621 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-11 17:18:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69425 states. [2024-11-11 17:18:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69425 to 60073. [2024-11-11 17:18:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60073 states, 60072 states have (on average 1.0543181515514715) internal successors, (63335), 60072 states have internal predecessors, (63335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60073 states to 60073 states and 63335 transitions. [2024-11-11 17:18:23,856 INFO L78 Accepts]: Start accepts. Automaton has 60073 states and 63335 transitions. Word has length 931 [2024-11-11 17:18:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:23,856 INFO L471 AbstractCegarLoop]: Abstraction has 60073 states and 63335 transitions. [2024-11-11 17:18:23,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 60073 states and 63335 transitions. [2024-11-11 17:18:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2024-11-11 17:18:23,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:23,887 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:23,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-11 17:18:23,887 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:23,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1024774475, now seen corresponding path program 1 times [2024-11-11 17:18:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443251494] [2024-11-11 17:18:23,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2024-11-11 17:18:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443251494] [2024-11-11 17:18:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443251494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:24,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:18:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876725750] [2024-11-11 17:18:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:24,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:24,615 INFO L87 Difference]: Start difference. First operand 60073 states and 63335 transitions. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:26,765 INFO L93 Difference]: Finished difference Result 129523 states and 136617 transitions. [2024-11-11 17:18:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 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 952 [2024-11-11 17:18:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:26,844 INFO L225 Difference]: With dead ends: 129523 [2024-11-11 17:18:26,844 INFO L226 Difference]: Without dead ends: 68598 [2024-11-11 17:18:26,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:26,876 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 905 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:26,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 624 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 17:18:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68598 states. [2024-11-11 17:18:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68598 to 60494. [2024-11-11 17:18:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 60493 states have (on average 1.0544525812903973) internal successors, (63787), 60493 states have internal predecessors, (63787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 63787 transitions. [2024-11-11 17:18:27,598 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 63787 transitions. Word has length 952 [2024-11-11 17:18:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:27,599 INFO L471 AbstractCegarLoop]: Abstraction has 60494 states and 63787 transitions. [2024-11-11 17:18:27,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 63787 transitions. [2024-11-11 17:18:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1308 [2024-11-11 17:18:27,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:27,652 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:27,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-11 17:18:27,652 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:27,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:27,652 INFO L85 PathProgramCache]: Analyzing trace with hash 878810431, now seen corresponding path program 1 times [2024-11-11 17:18:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706018246] [2024-11-11 17:18:27,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1898 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-11 17:18:28,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706018246] [2024-11-11 17:18:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706018246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:28,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:28,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:18:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75141041] [2024-11-11 17:18:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:28,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:28,965 INFO L87 Difference]: Start difference. First operand 60494 states and 63787 transitions. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:30,894 INFO L93 Difference]: Finished difference Result 131221 states and 138270 transitions. [2024-11-11 17:18:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 1307 [2024-11-11 17:18:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:30,963 INFO L225 Difference]: With dead ends: 131221 [2024-11-11 17:18:30,963 INFO L226 Difference]: Without dead ends: 69879 [2024-11-11 17:18:30,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:30,982 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 532 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:30,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 183 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-11 17:18:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69879 states. [2024-11-11 17:18:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69879 to 59644. [2024-11-11 17:18:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59644 states, 59643 states have (on average 1.0542561574702816) internal successors, (62879), 59643 states have internal predecessors, (62879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59644 states to 59644 states and 62879 transitions. [2024-11-11 17:18:31,777 INFO L78 Accepts]: Start accepts. Automaton has 59644 states and 62879 transitions. Word has length 1307 [2024-11-11 17:18:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:31,778 INFO L471 AbstractCegarLoop]: Abstraction has 59644 states and 62879 transitions. [2024-11-11 17:18:31,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:31,778 INFO L276 IsEmpty]: Start isEmpty. Operand 59644 states and 62879 transitions. [2024-11-11 17:18:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1375 [2024-11-11 17:18:31,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:31,835 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-11 17:18:31,835 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:31,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1972824337, now seen corresponding path program 1 times [2024-11-11 17:18:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748721745] [2024-11-11 17:18:31,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2409 backedges. 1276 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2024-11-11 17:18:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748721745] [2024-11-11 17:18:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748721745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:18:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:18:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224256252] [2024-11-11 17:18:32,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:32,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:18:32,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:18:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:32,818 INFO L87 Difference]: Start difference. First operand 59644 states and 62879 transitions. Second operand has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:18:34,852 INFO L93 Difference]: Finished difference Result 138445 states and 145755 transitions. [2024-11-11 17:18:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:18:34,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 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 1374 [2024-11-11 17:18:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:18:34,937 INFO L225 Difference]: With dead ends: 138445 [2024-11-11 17:18:34,937 INFO L226 Difference]: Without dead ends: 78378 [2024-11-11 17:18:34,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:18:34,978 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 591 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:18:34,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 198 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 17:18:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78378 states. [2024-11-11 17:18:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78378 to 58794. [2024-11-11 17:18:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58794 states, 58793 states have (on average 1.0549215042607114) internal successors, (62022), 58793 states have internal predecessors, (62022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58794 states to 58794 states and 62022 transitions. [2024-11-11 17:18:35,999 INFO L78 Accepts]: Start accepts. Automaton has 58794 states and 62022 transitions. Word has length 1374 [2024-11-11 17:18:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:18:36,000 INFO L471 AbstractCegarLoop]: Abstraction has 58794 states and 62022 transitions. [2024-11-11 17:18:36,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.5) internal successors, (782), 4 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:18:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 58794 states and 62022 transitions. [2024-11-11 17:18:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2024-11-11 17:18:36,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:18:36,052 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:18:36,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-11 17:18:36,052 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:18:36,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:18:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash -287429334, now seen corresponding path program 1 times [2024-11-11 17:18:36,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:18:36,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800805057] [2024-11-11 17:18:36,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:36,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:18:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1054 proven. 878 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2024-11-11 17:18:38,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:18:38,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800805057] [2024-11-11 17:18:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800805057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:18:38,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666052092] [2024-11-11 17:18:38,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:18:38,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:18:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:18:38,181 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) [2024-11-11 17:18:38,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 17:18:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:18:38,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 17:18:38,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:18:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1370 proven. 0 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2024-11-11 17:18:40,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:18:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666052092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:18:40,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:18:40,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-11 17:18:40,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830139698] [2024-11-11 17:18:40,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:18:40,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 17:18:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:18:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 17:18:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-11 17:18:40,457 INFO L87 Difference]: Start difference. First operand 58794 states and 62022 transitions. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)