./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.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 6974994fa41c2218950105a3f2a905efa9ed2213c945e8187ea9622e98b47d24 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:04:46,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:04:46,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:04:46,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:04:46,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:04:46,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:04:46,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:04:46,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:04:46,195 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:04:46,195 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:04:46,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:04:46,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:04:46,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:04:46,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:04:46,197 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:04:46,198 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:04:46,198 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:04:46,198 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:04:46,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:04:46,199 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:04:46,199 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:04:46,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:04:46,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:04:46,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:04:46,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:04:46,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:04:46,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:04:46,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:04:46,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:04:46,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:04:46,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:04:46,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:04:46,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:04:46,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:04:46,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:04:46,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:04:46,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:04:46,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:04:46,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:04:46,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:04:46,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:04:46,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:04:46,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6974994fa41c2218950105a3f2a905efa9ed2213c945e8187ea9622e98b47d24 [2024-10-23 21:04:46,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:04:46,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:04:46,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:04:46,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:04:46,468 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:04:46,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c [2024-10-23 21:04:47,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:04:48,269 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:04:48,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c [2024-10-23 21:04:48,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb270474/9532c8f7a6a942e5be30071e70b7dd72/FLAGf0997d89d [2024-10-23 21:04:48,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb270474/9532c8f7a6a942e5be30071e70b7dd72 [2024-10-23 21:04:48,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:04:48,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:04:48,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:04:48,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:04:48,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:04:48,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:04:48" (1/1) ... [2024-10-23 21:04:48,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e59df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:48, skipping insertion in model container [2024-10-23 21:04:48,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:04:48" (1/1) ... [2024-10-23 21:04:48,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:04:48,801 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c[3868,3881] [2024-10-23 21:04:49,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:04:49,527 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:04:49,547 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label08.c[3868,3881] [2024-10-23 21:04:49,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:04:49,940 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:04:49,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49 WrapperNode [2024-10-23 21:04:49,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:04:49,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:04:49,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:04:49,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:04:49,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,302 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-23 21:04:50,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:04:50,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:04:50,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:04:50,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:04:50,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,572 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:04:50,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:04:50,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:04:50,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:04:50,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:04:50,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (1/1) ... [2024-10-23 21:04:50,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:04:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:50,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:04:50,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:04:50,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:04:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:04:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:04:50,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:04:51,057 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:04:51,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:04:55,271 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-23 21:04:55,271 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:04:55,337 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:04:55,337 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:04:55,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:55 BoogieIcfgContainer [2024-10-23 21:04:55,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:04:55,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:04:55,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:04:55,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:04:55,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:04:48" (1/3) ... [2024-10-23 21:04:55,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1612885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:55, skipping insertion in model container [2024-10-23 21:04:55,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:04:49" (2/3) ... [2024-10-23 21:04:55,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1612885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:55, skipping insertion in model container [2024-10-23 21:04:55,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:55" (3/3) ... [2024-10-23 21:04:55,345 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08.c [2024-10-23 21:04:55,362 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:04:55,362 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:04:55,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:04:55,460 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;@3a818e14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:04:55,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:04:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 21:04:55,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:55,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:55,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:55,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1414716486, now seen corresponding path program 1 times [2024-10-23 21:04:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126814901] [2024-10-23 21:04:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126814901] [2024-10-23 21:04:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126814901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:55,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:55,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070336289] [2024-10-23 21:04:55,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:55,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:04:55,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:55,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:04:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:04:55,726 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:55,823 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-23 21:04:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:04:55,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-23 21:04:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:55,852 INFO L225 Difference]: With dead ends: 1511 [2024-10-23 21:04:55,852 INFO L226 Difference]: Without dead ends: 754 [2024-10-23 21:04:55,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:04:55,868 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:55,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:04:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-23 21:04:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-23 21:04:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-23 21:04:55,951 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 28 [2024-10-23 21:04:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:55,951 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-23 21:04:55,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-23 21:04:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 21:04:55,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:55,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:55,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:04:55,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:55,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2058068714, now seen corresponding path program 1 times [2024-10-23 21:04:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:55,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422226970] [2024-10-23 21:04:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:55,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:56,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422226970] [2024-10-23 21:04:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422226970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:56,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844857025] [2024-10-23 21:04:56,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:56,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:56,094 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:59,231 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-23 21:04:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:59,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-10-23 21:04:59,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:59,238 INFO L225 Difference]: With dead ends: 2258 [2024-10-23 21:04:59,238 INFO L226 Difference]: Without dead ends: 1505 [2024-10-23 21:04:59,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:59,240 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 772 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:59,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 473 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:04:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-23 21:04:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-23 21:04:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6070478723404256) internal successors, (2417), 1504 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2417 transitions. [2024-10-23 21:04:59,284 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2417 transitions. Word has length 28 [2024-10-23 21:04:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:59,288 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2417 transitions. [2024-10-23 21:04:59,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2417 transitions. [2024-10-23 21:04:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-23 21:04:59,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:59,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:04:59,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:04:59,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash -681926908, now seen corresponding path program 1 times [2024-10-23 21:04:59,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:59,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769817615] [2024-10-23 21:04:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:59,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:59,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:59,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769817615] [2024-10-23 21:04:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769817615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:59,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:59,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:59,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118292378] [2024-10-23 21:04:59,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:59,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:59,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:59,574 INFO L87 Difference]: Start difference. First operand 1505 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:02,731 INFO L93 Difference]: Finished difference Result 4511 states and 7248 transitions. [2024-10-23 21:05:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-10-23 21:05:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:02,745 INFO L225 Difference]: With dead ends: 4511 [2024-10-23 21:05:02,746 INFO L226 Difference]: Without dead ends: 3007 [2024-10-23 21:05:02,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:02,753 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:02,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 447 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:05:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2024-10-23 21:05:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2024-10-23 21:05:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.4158349966733201) internal successors, (4256), 3006 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4256 transitions. [2024-10-23 21:05:02,831 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4256 transitions. Word has length 103 [2024-10-23 21:05:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:02,831 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4256 transitions. [2024-10-23 21:05:02,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4256 transitions. [2024-10-23 21:05:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-23 21:05:02,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:02,835 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:05:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:05:02,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:02,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:02,837 INFO L85 PathProgramCache]: Analyzing trace with hash 41292393, now seen corresponding path program 1 times [2024-10-23 21:05:02,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:02,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316029129] [2024-10-23 21:05:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:05:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316029129] [2024-10-23 21:05:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316029129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:03,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:03,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893555006] [2024-10-23 21:05:03,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:03,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:05:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:05:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:05:03,240 INFO L87 Difference]: Start difference. First operand 3007 states and 4256 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:07,357 INFO L93 Difference]: Finished difference Result 9768 states and 13600 transitions. [2024-10-23 21:05:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:05:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-23 21:05:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:07,378 INFO L225 Difference]: With dead ends: 9768 [2024-10-23 21:05:07,379 INFO L226 Difference]: Without dead ends: 6762 [2024-10-23 21:05:07,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:05:07,384 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 2179 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:07,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 164 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-23 21:05:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-23 21:05:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-10-23 21:05:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.350835675195977) internal successors, (9133), 6761 states have internal predecessors, (9133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 9133 transitions. [2024-10-23 21:05:07,507 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 9133 transitions. Word has length 105 [2024-10-23 21:05:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:07,509 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 9133 transitions. [2024-10-23 21:05:07,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 9133 transitions. [2024-10-23 21:05:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-23 21:05:07,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:07,517 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:05:07,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:05:07,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:07,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1755593171, now seen corresponding path program 1 times [2024-10-23 21:05:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433237612] [2024-10-23 21:05:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:07,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:05:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433237612] [2024-10-23 21:05:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433237612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:05:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849160440] [2024-10-23 21:05:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:07,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:05:07,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:05:07,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:05:07,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:05:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:07,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:05:08,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:05:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 21:05:08,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:05:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849160440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:08,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:05:08,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 21:05:08,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35805694] [2024-10-23 21:05:08,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:08,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:05:08,237 INFO L87 Difference]: Start difference. First operand 6762 states and 9133 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:10,631 INFO L93 Difference]: Finished difference Result 15776 states and 21143 transitions. [2024-10-23 21:05:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 173 [2024-10-23 21:05:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:10,658 INFO L225 Difference]: With dead ends: 15776 [2024-10-23 21:05:10,659 INFO L226 Difference]: Without dead ends: 9766 [2024-10-23 21:05:10,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:05:10,668 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 712 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:10,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 154 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:05:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2024-10-23 21:05:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2024-10-23 21:05:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2557091653865848) internal successors, (12262), 9765 states have internal predecessors, (12262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12262 transitions. [2024-10-23 21:05:10,829 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12262 transitions. Word has length 173 [2024-10-23 21:05:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:10,830 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12262 transitions. [2024-10-23 21:05:10,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12262 transitions. [2024-10-23 21:05:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-10-23 21:05:10,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:10,835 INFO L215 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:05:10,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:05:11,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:05:11,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:11,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 365467451, now seen corresponding path program 1 times [2024-10-23 21:05:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:11,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417084255] [2024-10-23 21:05:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:05:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:11,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417084255] [2024-10-23 21:05:11,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417084255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:11,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:11,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471801526] [2024-10-23 21:05:11,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:11,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:11,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:11,247 INFO L87 Difference]: Start difference. First operand 9766 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:13,997 INFO L93 Difference]: Finished difference Result 23286 states and 30151 transitions. [2024-10-23 21:05:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:14,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 240 [2024-10-23 21:05:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:14,035 INFO L225 Difference]: With dead ends: 23286 [2024-10-23 21:05:14,035 INFO L226 Difference]: Without dead ends: 14272 [2024-10-23 21:05:14,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:14,046 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:14,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 485 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:05:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14272 states. [2024-10-23 21:05:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 9766. [2024-10-23 21:05:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2557091653865848) internal successors, (12262), 9765 states have internal predecessors, (12262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12262 transitions. [2024-10-23 21:05:14,212 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12262 transitions. Word has length 240 [2024-10-23 21:05:14,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:14,212 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12262 transitions. [2024-10-23 21:05:14,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12262 transitions. [2024-10-23 21:05:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-23 21:05:14,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:14,217 INFO L215 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:05:14,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:05:14,217 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:14,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 257045376, now seen corresponding path program 1 times [2024-10-23 21:05:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43279906] [2024-10-23 21:05:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-23 21:05:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43279906] [2024-10-23 21:05:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43279906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:14,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:05:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592011606] [2024-10-23 21:05:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:14,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:14,432 INFO L87 Difference]: Start difference. First operand 9766 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:17,241 INFO L93 Difference]: Finished difference Result 27043 states and 34471 transitions. [2024-10-23 21:05:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:17,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 241 [2024-10-23 21:05:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:17,273 INFO L225 Difference]: With dead ends: 27043 [2024-10-23 21:05:17,273 INFO L226 Difference]: Without dead ends: 18029 [2024-10-23 21:05:17,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:17,287 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:17,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 350 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:05:17,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18029 states. [2024-10-23 21:05:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18029 to 15774. [2024-10-23 21:05:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.222278577315666) internal successors, (19279), 15773 states have internal predecessors, (19279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 19279 transitions. [2024-10-23 21:05:17,487 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 19279 transitions. Word has length 241 [2024-10-23 21:05:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:17,488 INFO L471 AbstractCegarLoop]: Abstraction has 15774 states and 19279 transitions. [2024-10-23 21:05:17,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 19279 transitions. [2024-10-23 21:05:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-10-23 21:05:17,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:17,494 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:05:17,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:05:17,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:17,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1382730998, now seen corresponding path program 1 times [2024-10-23 21:05:17,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:17,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147011384] [2024-10-23 21:05:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-23 21:05:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147011384] [2024-10-23 21:05:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147011384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562146989] [2024-10-23 21:05:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:17,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:05:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:05:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:05:17,897 INFO L87 Difference]: Start difference. First operand 15774 states and 19279 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:20,913 INFO L93 Difference]: Finished difference Result 33086 states and 40330 transitions. [2024-10-23 21:05:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:05:20,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 336 [2024-10-23 21:05:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:20,936 INFO L225 Difference]: With dead ends: 33086 [2024-10-23 21:05:20,937 INFO L226 Difference]: Without dead ends: 18027 [2024-10-23 21:05:20,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:05:20,953 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:20,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 3904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 21:05:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2024-10-23 21:05:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2024-10-23 21:05:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18026 states have (on average 1.1949406412959058) internal successors, (21540), 18026 states have internal predecessors, (21540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 21540 transitions. [2024-10-23 21:05:21,161 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 21540 transitions. Word has length 336 [2024-10-23 21:05:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:21,161 INFO L471 AbstractCegarLoop]: Abstraction has 18027 states and 21540 transitions. [2024-10-23 21:05:21,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 21540 transitions. [2024-10-23 21:05:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-23 21:05:21,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:21,168 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:21,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:05:21,168 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:21,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1278060537, now seen corresponding path program 1 times [2024-10-23 21:05:21,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:21,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446648362] [2024-10-23 21:05:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:05:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446648362] [2024-10-23 21:05:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446648362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:21,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:21,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481261521] [2024-10-23 21:05:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:21,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:21,406 INFO L87 Difference]: Start difference. First operand 18027 states and 21540 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:24,200 INFO L93 Difference]: Finished difference Result 43563 states and 53106 transitions. [2024-10-23 21:05:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:24,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 351 [2024-10-23 21:05:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:24,239 INFO L225 Difference]: With dead ends: 43563 [2024-10-23 21:05:24,239 INFO L226 Difference]: Without dead ends: 26288 [2024-10-23 21:05:24,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:24,264 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 707 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:24,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 393 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:05:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2024-10-23 21:05:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 25537. [2024-10-23 21:05:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25537 states, 25536 states have (on average 1.1943922305764412) internal successors, (30500), 25536 states have internal predecessors, (30500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:24,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25537 states to 25537 states and 30500 transitions. [2024-10-23 21:05:24,572 INFO L78 Accepts]: Start accepts. Automaton has 25537 states and 30500 transitions. Word has length 351 [2024-10-23 21:05:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:24,572 INFO L471 AbstractCegarLoop]: Abstraction has 25537 states and 30500 transitions. [2024-10-23 21:05:24,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 25537 states and 30500 transitions. [2024-10-23 21:05:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-10-23 21:05:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:24,580 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:24,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:05:24,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1706879681, now seen corresponding path program 1 times [2024-10-23 21:05:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162320695] [2024-10-23 21:05:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-23 21:05:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162320695] [2024-10-23 21:05:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162320695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99665170] [2024-10-23 21:05:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:24,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:24,950 INFO L87 Difference]: Start difference. First operand 25537 states and 30500 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:27,310 INFO L93 Difference]: Finished difference Result 60085 states and 73354 transitions. [2024-10-23 21:05:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:27,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 379 [2024-10-23 21:05:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:27,355 INFO L225 Difference]: With dead ends: 60085 [2024-10-23 21:05:27,355 INFO L226 Difference]: Without dead ends: 35300 [2024-10-23 21:05:27,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:27,379 INFO L432 NwaCegarLoop]: 1218 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:27,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1225 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:05:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35300 states. [2024-10-23 21:05:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35300 to 33047. [2024-10-23 21:05:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33047 states, 33046 states have (on average 1.1808993524178417) internal successors, (39024), 33046 states have internal predecessors, (39024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33047 states to 33047 states and 39024 transitions. [2024-10-23 21:05:28,006 INFO L78 Accepts]: Start accepts. Automaton has 33047 states and 39024 transitions. Word has length 379 [2024-10-23 21:05:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:28,007 INFO L471 AbstractCegarLoop]: Abstraction has 33047 states and 39024 transitions. [2024-10-23 21:05:28,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 33047 states and 39024 transitions. [2024-10-23 21:05:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-10-23 21:05:28,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:28,014 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:28,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:05:28,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -614580297, now seen corresponding path program 1 times [2024-10-23 21:05:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514181841] [2024-10-23 21:05:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:05:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514181841] [2024-10-23 21:05:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514181841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:05:28,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:05:28,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:05:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409462164] [2024-10-23 21:05:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:05:28,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:05:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:05:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:28,426 INFO L87 Difference]: Start difference. First operand 33047 states and 39024 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:05:30,860 INFO L93 Difference]: Finished difference Result 75856 states and 91236 transitions. [2024-10-23 21:05:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:05:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 383 [2024-10-23 21:05:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:05:30,912 INFO L225 Difference]: With dead ends: 75856 [2024-10-23 21:05:30,913 INFO L226 Difference]: Without dead ends: 43561 [2024-10-23 21:05:30,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:05:30,941 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 673 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:05:30,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1293 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:05:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43561 states. [2024-10-23 21:05:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43561 to 43561. [2024-10-23 21:05:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43561 states, 43560 states have (on average 1.159435261707989) internal successors, (50505), 43560 states have internal predecessors, (50505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43561 states to 43561 states and 50505 transitions. [2024-10-23 21:05:31,651 INFO L78 Accepts]: Start accepts. Automaton has 43561 states and 50505 transitions. Word has length 383 [2024-10-23 21:05:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:05:31,657 INFO L471 AbstractCegarLoop]: Abstraction has 43561 states and 50505 transitions. [2024-10-23 21:05:31,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:05:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43561 states and 50505 transitions. [2024-10-23 21:05:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-10-23 21:05:31,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:05:31,665 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:05:31,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:05:31,666 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:05:31,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:05:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1727694975, now seen corresponding path program 1 times [2024-10-23 21:05:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:05:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128816678] [2024-10-23 21:05:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:05:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 338 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:05:33,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:05:33,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128816678] [2024-10-23 21:05:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128816678] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:05:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040533239] [2024-10-23 21:05:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:05:33,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:05:33,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:05:33,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:05:33,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:05:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:05:33,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:05:33,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:05:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 246 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:05:34,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:05:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 246 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-23 21:05:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040533239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:05:34,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:05:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-10-23 21:05:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560323557] [2024-10-23 21:05:34,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:05:34,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-23 21:05:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:05:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-23 21:05:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-23 21:05:34,313 INFO L87 Difference]: Start difference. First operand 43561 states and 50505 transitions. Second operand has 10 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:06:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:06:03,664 INFO L93 Difference]: Finished difference Result 181956 states and 211084 transitions. [2024-10-23 21:06:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-23 21:06:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 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 387 [2024-10-23 21:06:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:06:03,872 INFO L225 Difference]: With dead ends: 181956 [2024-10-23 21:06:03,872 INFO L226 Difference]: Without dead ends: 126175 [2024-10-23 21:06:03,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2024-10-23 21:06:03,913 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 17180 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 44701 mSolverCounterSat, 5974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17180 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 50675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5974 IncrementalHoareTripleChecker+Valid, 44701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:06:03,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17180 Valid, 345 Invalid, 50675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5974 Valid, 44701 Invalid, 0 Unknown, 0 Unchecked, 27.5s Time] [2024-10-23 21:06:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126175 states. [2024-10-23 21:06:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126175 to 103641. [2024-10-23 21:06:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103641 states, 103640 states have (on average 1.1169143187958317) internal successors, (115757), 103640 states have internal predecessors, (115757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:06:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103641 states to 103641 states and 115757 transitions. [2024-10-23 21:06:05,570 INFO L78 Accepts]: Start accepts. Automaton has 103641 states and 115757 transitions. Word has length 387 [2024-10-23 21:06:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:06:05,570 INFO L471 AbstractCegarLoop]: Abstraction has 103641 states and 115757 transitions. [2024-10-23 21:06:05,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:06:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 103641 states and 115757 transitions. [2024-10-23 21:06:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-23 21:06:05,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:06:05,851 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:06:05,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:06:06,052 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,SelfDestructingSolverStorable11 [2024-10-23 21:06:06,053 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:06:06,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:06:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1337353716, now seen corresponding path program 1 times [2024-10-23 21:06:06,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:06:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193401445] [2024-10-23 21:06:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:06:06,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms