./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/Problem18_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/Problem18_label05.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 d1b880f3deb97bdbbf7c11e97cbf5ecd616b00539f1d96d544b9d037b9f9e706 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:32:09,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:32:09,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:32:09,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:32:09,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:32:09,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:32:09,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:32:09,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:32:09,186 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:32:09,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:32:09,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:32:09,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:32:09,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:32:09,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:32:09,189 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:32:09,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:32:09,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:32:09,190 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:32:09,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:32:09,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:32:09,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:32:09,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:32:09,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:32:09,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:32:09,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:32:09,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:32:09,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:32:09,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:32:09,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:32:09,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:32:09,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:32:09,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1b880f3deb97bdbbf7c11e97cbf5ecd616b00539f1d96d544b9d037b9f9e706 [2024-10-12 16:32:09,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:32:09,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:32:09,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:32:09,464 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:32:09,465 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:32:09,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2024-10-12 16:32:10,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:32:11,055 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:32:11,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label05.c [2024-10-12 16:32:11,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bad23eaa/5d92f9ea702540a0aa170733944a069c/FLAGcb75a1f56 [2024-10-12 16:32:11,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bad23eaa/5d92f9ea702540a0aa170733944a069c [2024-10-12 16:32:11,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:32:11,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:32:11,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:32:11,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:32:11,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:32:11,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:32:11" (1/1) ... [2024-10-12 16:32:11,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6395fe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:11, skipping insertion in model container [2024-10-12 16:32:11,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:32:11" (1/1) ... [2024-10-12 16:32:11,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:32:11,380 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/Problem18_label05.c[4165,4178] [2024-10-12 16:32:11,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:32:11,744 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:32:11,762 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/Problem18_label05.c[4165,4178] [2024-10-12 16:32:12,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:32:12,051 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:32:12,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12 WrapperNode [2024-10-12 16:32:12,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:32:12,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:32:12,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:32:12,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:32:12,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,282 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-10-12 16:32:12,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:32:12,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:32:12,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:32:12,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:32:12,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,390 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]. [2024-10-12 16:32:12,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:32:12,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:32:12,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:32:12,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:32:12,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (1/1) ... [2024-10-12 16:32:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:32:12,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:12,549 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) [2024-10-12 16:32:12,551 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 [2024-10-12 16:32:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:32:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:32:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:32:12,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:32:12,698 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:32:12,699 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:32:15,188 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-10-12 16:32:15,188 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:32:15,248 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:32:15,249 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:32:15,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:32:15 BoogieIcfgContainer [2024-10-12 16:32:15,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:32:15,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:32:15,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:32:15,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:32:15,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:32:11" (1/3) ... [2024-10-12 16:32:15,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138d1380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:32:15, skipping insertion in model container [2024-10-12 16:32:15,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:32:12" (2/3) ... [2024-10-12 16:32:15,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138d1380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:32:15, skipping insertion in model container [2024-10-12 16:32:15,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:32:15" (3/3) ... [2024-10-12 16:32:15,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2024-10-12 16:32:15,273 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:32:15,273 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:32:15,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:32:15,358 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;@26879761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:32:15,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:32:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 16:32:15,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:15,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:15,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:15,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1005544647, now seen corresponding path program 1 times [2024-10-12 16:32:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896884527] [2024-10-12 16:32:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:32:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896884527] [2024-10-12 16:32:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896884527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:15,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:32:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833487406] [2024-10-12 16:32:15,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:15,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:32:15,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:15,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:32:15,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:32:15,563 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:15,629 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2024-10-12 16:32:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:32:15,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 16:32:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:15,652 INFO L225 Difference]: With dead ends: 1389 [2024-10-12 16:32:15,652 INFO L226 Difference]: Without dead ends: 693 [2024-10-12 16:32:15,659 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 [2024-10-12 16:32:15,663 INFO L432 NwaCegarLoop]: 1317 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, 1317 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 [2024-10-12 16:32:15,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:32:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-12 16:32:15,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2024-10-12 16:32:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2024-10-12 16:32:15,720 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 37 [2024-10-12 16:32:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:15,721 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2024-10-12 16:32:15,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2024-10-12 16:32:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 16:32:15,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:15,722 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:15,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:32:15,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:15,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2010148763, now seen corresponding path program 1 times [2024-10-12 16:32:15,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:15,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733590911] [2024-10-12 16:32:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:32:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733590911] [2024-10-12 16:32:15,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733590911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:15,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:15,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742530823] [2024-10-12 16:32:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:15,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:32:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:15,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:32:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:32:15,923 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:20,113 INFO L93 Difference]: Finished difference Result 2765 states and 5263 transitions. [2024-10-12 16:32:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:32:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 16:32:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:20,121 INFO L225 Difference]: With dead ends: 2765 [2024-10-12 16:32:20,121 INFO L226 Difference]: Without dead ends: 2073 [2024-10-12 16:32:20,122 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 [2024-10-12 16:32:20,123 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 2016 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5102 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 6053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 5102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:20,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 640 Invalid, 6053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 5102 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-12 16:32:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2024-10-12 16:32:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2024-10-12 16:32:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.5535714285714286) internal successors, (3219), 2072 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3219 transitions. [2024-10-12 16:32:20,173 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3219 transitions. Word has length 37 [2024-10-12 16:32:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:20,173 INFO L471 AbstractCegarLoop]: Abstraction has 2073 states and 3219 transitions. [2024-10-12 16:32:20,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3219 transitions. [2024-10-12 16:32:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-12 16:32:20,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:20,178 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, 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] [2024-10-12 16:32:20,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:32:20,178 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:20,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1676713255, now seen corresponding path program 1 times [2024-10-12 16:32:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105995308] [2024-10-12 16:32:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:32:20,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:20,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105995308] [2024-10-12 16:32:20,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105995308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:20,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:20,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:20,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787566488] [2024-10-12 16:32:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:20,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:32:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:32:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:32:20,571 INFO L87 Difference]: Start difference. First operand 2073 states and 3219 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:23,707 INFO L93 Difference]: Finished difference Result 6215 states and 9539 transitions. [2024-10-12 16:32:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:32:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-10-12 16:32:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:23,719 INFO L225 Difference]: With dead ends: 6215 [2024-10-12 16:32:23,720 INFO L226 Difference]: Without dead ends: 4143 [2024-10-12 16:32:23,726 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 [2024-10-12 16:32:23,728 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 1922 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 4629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:23,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 645 Invalid, 4629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-12 16:32:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-10-12 16:32:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2024-10-12 16:32:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.291405118300338) internal successors, (5349), 4142 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5349 transitions. [2024-10-12 16:32:23,786 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5349 transitions. Word has length 130 [2024-10-12 16:32:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:23,788 INFO L471 AbstractCegarLoop]: Abstraction has 4143 states and 5349 transitions. [2024-10-12 16:32:23,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5349 transitions. [2024-10-12 16:32:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-12 16:32:23,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:23,794 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:23,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:32:23,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:23,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1273019308, now seen corresponding path program 1 times [2024-10-12 16:32:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:23,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752762927] [2024-10-12 16:32:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:32:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752762927] [2024-10-12 16:32:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752762927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:24,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:24,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919818300] [2024-10-12 16:32:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:24,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:24,050 INFO L87 Difference]: Start difference. First operand 4143 states and 5349 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:25,886 INFO L93 Difference]: Finished difference Result 8975 states and 12516 transitions. [2024-10-12 16:32:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-10-12 16:32:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:25,904 INFO L225 Difference]: With dead ends: 8975 [2024-10-12 16:32:25,904 INFO L226 Difference]: Without dead ends: 5523 [2024-10-12 16:32:25,910 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 [2024-10-12 16:32:25,912 INFO L432 NwaCegarLoop]: 1061 mSDtfsCounter, 678 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:25,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1067 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:32:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2024-10-12 16:32:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2024-10-12 16:32:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.3044186888808402) internal successors, (7203), 5522 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 7203 transitions. [2024-10-12 16:32:25,983 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 7203 transitions. Word has length 219 [2024-10-12 16:32:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:25,985 INFO L471 AbstractCegarLoop]: Abstraction has 5523 states and 7203 transitions. [2024-10-12 16:32:25,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 7203 transitions. [2024-10-12 16:32:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-12 16:32:25,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:25,991 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:25,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:32:25,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:25,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1677113911, now seen corresponding path program 1 times [2024-10-12 16:32:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578116074] [2024-10-12 16:32:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:32:26,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:26,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578116074] [2024-10-12 16:32:26,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578116074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:26,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:26,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:26,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823629784] [2024-10-12 16:32:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:26,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:32:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:32:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:32:26,329 INFO L87 Difference]: Start difference. First operand 5523 states and 7203 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:28,581 INFO L93 Difference]: Finished difference Result 13168 states and 17885 transitions. [2024-10-12 16:32:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:32:28,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2024-10-12 16:32:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:28,601 INFO L225 Difference]: With dead ends: 13168 [2024-10-12 16:32:28,601 INFO L226 Difference]: Without dead ends: 8283 [2024-10-12 16:32:28,607 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 [2024-10-12 16:32:28,608 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 513 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:28,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 634 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:32:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2024-10-12 16:32:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 7593. [2024-10-12 16:32:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.1596417281348788) internal successors, (8804), 7592 states have internal predecessors, (8804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 8804 transitions. [2024-10-12 16:32:28,704 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 8804 transitions. Word has length 310 [2024-10-12 16:32:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:28,705 INFO L471 AbstractCegarLoop]: Abstraction has 7593 states and 8804 transitions. [2024-10-12 16:32:28,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 8804 transitions. [2024-10-12 16:32:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2024-10-12 16:32:28,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:28,718 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:28,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:32:28,718 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:28,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1135562147, now seen corresponding path program 1 times [2024-10-12 16:32:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966345908] [2024-10-12 16:32:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 107 proven. 6 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-10-12 16:32:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966345908] [2024-10-12 16:32:29,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966345908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267567843] [2024-10-12 16:32:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:29,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:29,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:29,646 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) [2024-10-12 16:32:29,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:32:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:29,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:29,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-12 16:32:30,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267567843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 16:32:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064570936] [2024-10-12 16:32:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:30,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:30,716 INFO L87 Difference]: Start difference. First operand 7593 states and 8804 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:32,285 INFO L93 Difference]: Finished difference Result 17255 states and 20819 transitions. [2024-10-12 16:32:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:32,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 0 states have call successors, (0), 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 920 [2024-10-12 16:32:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:32,311 INFO L225 Difference]: With dead ends: 17255 [2024-10-12 16:32:32,312 INFO L226 Difference]: Without dead ends: 10353 [2024-10-12 16:32:32,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:32,319 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:32,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 387 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:32:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2024-10-12 16:32:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 9663. [2024-10-12 16:32:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9663 states, 9662 states have (on average 1.1434485613744567) internal successors, (11048), 9662 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 11048 transitions. [2024-10-12 16:32:32,426 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 11048 transitions. Word has length 920 [2024-10-12 16:32:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:32,427 INFO L471 AbstractCegarLoop]: Abstraction has 9663 states and 11048 transitions. [2024-10-12 16:32:32,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 11048 transitions. [2024-10-12 16:32:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2024-10-12 16:32:32,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:32,445 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:32,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:32:32,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 16:32:32,647 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:32,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1763020292, now seen corresponding path program 1 times [2024-10-12 16:32:32,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:32,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631642697] [2024-10-12 16:32:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-12 16:32:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:33,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631642697] [2024-10-12 16:32:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631642697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755482258] [2024-10-12 16:32:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:33,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:33,637 INFO L87 Difference]: Start difference. First operand 9663 states and 11048 transitions. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:35,389 INFO L93 Difference]: Finished difference Result 23465 states and 27254 transitions. [2024-10-12 16:32:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 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 969 [2024-10-12 16:32:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:35,413 INFO L225 Difference]: With dead ends: 23465 [2024-10-12 16:32:35,413 INFO L226 Difference]: Without dead ends: 14493 [2024-10-12 16:32:35,422 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 [2024-10-12 16:32:35,423 INFO L432 NwaCegarLoop]: 1083 mSDtfsCounter, 574 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:35,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1089 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:32:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14493 states. [2024-10-12 16:32:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14493 to 13803. [2024-10-12 16:32:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1293290827416316) internal successors, (15587), 13802 states have internal predecessors, (15587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15587 transitions. [2024-10-12 16:32:35,606 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15587 transitions. Word has length 969 [2024-10-12 16:32:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:35,607 INFO L471 AbstractCegarLoop]: Abstraction has 13803 states and 15587 transitions. [2024-10-12 16:32:35,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15587 transitions. [2024-10-12 16:32:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2024-10-12 16:32:35,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:35,615 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:35,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:32:35,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:35,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -573049176, now seen corresponding path program 1 times [2024-10-12 16:32:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576364698] [2024-10-12 16:32:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-10-12 16:32:36,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576364698] [2024-10-12 16:32:36,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576364698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:36,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:36,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:36,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094567154] [2024-10-12 16:32:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:36,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:36,094 INFO L87 Difference]: Start difference. First operand 13803 states and 15587 transitions. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:37,706 INFO L93 Difference]: Finished difference Result 26225 states and 29789 transitions. [2024-10-12 16:32:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 979 [2024-10-12 16:32:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:37,727 INFO L225 Difference]: With dead ends: 26225 [2024-10-12 16:32:37,727 INFO L226 Difference]: Without dead ends: 13803 [2024-10-12 16:32:37,737 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 [2024-10-12 16:32:37,738 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 589 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:37,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 148 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:32:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2024-10-12 16:32:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 13803. [2024-10-12 16:32:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1261411389653673) internal successors, (15543), 13802 states have internal predecessors, (15543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15543 transitions. [2024-10-12 16:32:37,881 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15543 transitions. Word has length 979 [2024-10-12 16:32:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:37,882 INFO L471 AbstractCegarLoop]: Abstraction has 13803 states and 15543 transitions. [2024-10-12 16:32:37,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15543 transitions. [2024-10-12 16:32:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-10-12 16:32:37,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:37,889 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:37,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:32:37,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:37,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1180808242, now seen corresponding path program 1 times [2024-10-12 16:32:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462018328] [2024-10-12 16:32:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 315 proven. 436 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 16:32:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462018328] [2024-10-12 16:32:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462018328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856932380] [2024-10-12 16:32:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:39,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:39,215 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) [2024-10-12 16:32:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:32:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:39,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:39,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2024-10-12 16:32:40,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856932380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2024-10-12 16:32:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700587007] [2024-10-12 16:32:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:40,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:32:40,115 INFO L87 Difference]: Start difference. First operand 13803 states and 15543 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 2 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:41,640 INFO L93 Difference]: Finished difference Result 31745 states and 36018 transitions. [2024-10-12 16:32:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:41,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 2 states have internal predecessors, (590), 0 states have call successors, (0), 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 995 [2024-10-12 16:32:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:41,667 INFO L225 Difference]: With dead ends: 31745 [2024-10-12 16:32:41,667 INFO L226 Difference]: Without dead ends: 19323 [2024-10-12 16:32:41,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:32:41,680 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 249 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:41,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 75 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:32:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19323 states. [2024-10-12 16:32:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19323 to 18633. [2024-10-12 16:32:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18633 states, 18632 states have (on average 1.1182374409617861) internal successors, (20835), 18632 states have internal predecessors, (20835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18633 states to 18633 states and 20835 transitions. [2024-10-12 16:32:41,862 INFO L78 Accepts]: Start accepts. Automaton has 18633 states and 20835 transitions. Word has length 995 [2024-10-12 16:32:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:41,863 INFO L471 AbstractCegarLoop]: Abstraction has 18633 states and 20835 transitions. [2024-10-12 16:32:41,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 2 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18633 states and 20835 transitions. [2024-10-12 16:32:41,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2024-10-12 16:32:41,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:41,870 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:41,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:32:42,071 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,SelfDestructingSolverStorable8 [2024-10-12 16:32:42,071 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:42,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash 985547318, now seen corresponding path program 1 times [2024-10-12 16:32:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123469136] [2024-10-12 16:32:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 336 proven. 48 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2024-10-12 16:32:42,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:42,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123469136] [2024-10-12 16:32:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123469136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:42,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974719045] [2024-10-12 16:32:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:42,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:42,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:32:42,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:32:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:43,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:43,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-10-12 16:32:43,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974719045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 16:32:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619686241] [2024-10-12 16:32:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:43,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:43,278 INFO L87 Difference]: Start difference. First operand 18633 states and 20835 transitions. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:44,793 INFO L93 Difference]: Finished difference Result 40025 states and 45639 transitions. [2024-10-12 16:32:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 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 1046 [2024-10-12 16:32:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:44,823 INFO L225 Difference]: With dead ends: 40025 [2024-10-12 16:32:44,823 INFO L226 Difference]: Without dead ends: 22773 [2024-10-12 16:32:44,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:44,840 INFO L432 NwaCegarLoop]: 1127 mSDtfsCounter, 665 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:44,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1133 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:32:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2024-10-12 16:32:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 22773. [2024-10-12 16:32:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.1191814509046196) internal successors, (25486), 22772 states have internal predecessors, (25486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 25486 transitions. [2024-10-12 16:32:45,081 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 25486 transitions. Word has length 1046 [2024-10-12 16:32:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:45,082 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 25486 transitions. [2024-10-12 16:32:45,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 25486 transitions. [2024-10-12 16:32:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2024-10-12 16:32:45,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:45,092 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:45,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 16:32:45,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:45,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:45,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1894742712, now seen corresponding path program 1 times [2024-10-12 16:32:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:45,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235726609] [2024-10-12 16:32:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:45,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 510 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-12 16:32:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235726609] [2024-10-12 16:32:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235726609] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679442110] [2024-10-12 16:32:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:46,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:46,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:32:46,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:32:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:46,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:46,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 513 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2024-10-12 16:32:46,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679442110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:46,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 16:32:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456199761] [2024-10-12 16:32:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:46,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:46,426 INFO L87 Difference]: Start difference. First operand 22773 states and 25486 transitions. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:47,832 INFO L93 Difference]: Finished difference Result 44165 states and 49587 transitions. [2024-10-12 16:32:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 1095 [2024-10-12 16:32:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:47,861 INFO L225 Difference]: With dead ends: 44165 [2024-10-12 16:32:47,861 INFO L226 Difference]: Without dead ends: 22773 [2024-10-12 16:32:47,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:47,876 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 691 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:47,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 163 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:32:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2024-10-12 16:32:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 22773. [2024-10-12 16:32:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.0869049710170384) internal successors, (24751), 22772 states have internal predecessors, (24751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 24751 transitions. [2024-10-12 16:32:48,092 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 24751 transitions. Word has length 1095 [2024-10-12 16:32:48,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:48,093 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 24751 transitions. [2024-10-12 16:32:48,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:48,094 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 24751 transitions. [2024-10-12 16:32:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2024-10-12 16:32:48,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:48,103 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:48,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 16:32:48,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:48,304 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:48,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1517775004, now seen corresponding path program 1 times [2024-10-12 16:32:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219895663] [2024-10-12 16:32:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2024-10-12 16:32:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219895663] [2024-10-12 16:32:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219895663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:32:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:32:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127235102] [2024-10-12 16:32:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:49,478 INFO L87 Difference]: Start difference. First operand 22773 states and 24751 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:50,938 INFO L93 Difference]: Finished difference Result 44165 states and 48117 transitions. [2024-10-12 16:32:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 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 1122 [2024-10-12 16:32:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:50,963 INFO L225 Difference]: With dead ends: 44165 [2024-10-12 16:32:50,963 INFO L226 Difference]: Without dead ends: 22773 [2024-10-12 16:32:50,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:32:50,978 INFO L432 NwaCegarLoop]: 771 mSDtfsCounter, 759 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:50,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 777 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:32:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2024-10-12 16:32:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 22773. [2024-10-12 16:32:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22773 states, 22772 states have (on average 1.0746969963112594) internal successors, (24473), 22772 states have internal predecessors, (24473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22773 states to 22773 states and 24473 transitions. [2024-10-12 16:32:51,182 INFO L78 Accepts]: Start accepts. Automaton has 22773 states and 24473 transitions. Word has length 1122 [2024-10-12 16:32:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:51,183 INFO L471 AbstractCegarLoop]: Abstraction has 22773 states and 24473 transitions. [2024-10-12 16:32:51,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 22773 states and 24473 transitions. [2024-10-12 16:32:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2024-10-12 16:32:51,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:51,193 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:32:51,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:32:51,193 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:51,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash 885964141, now seen corresponding path program 1 times [2024-10-12 16:32:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747344634] [2024-10-12 16:32:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 678 proven. 48 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-12 16:32:51,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:51,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747344634] [2024-10-12 16:32:51,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747344634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444007109] [2024-10-12 16:32:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:51,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:51,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:32:51,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 16:32:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:52,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:52,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2024-10-12 16:32:52,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444007109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:52,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:52,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 16:32:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641969243] [2024-10-12 16:32:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:52,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:52,202 INFO L87 Difference]: Start difference. First operand 22773 states and 24473 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:53,867 INFO L93 Difference]: Finished difference Result 49685 states and 53820 transitions. [2024-10-12 16:32:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:53,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 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 1137 [2024-10-12 16:32:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:53,896 INFO L225 Difference]: With dead ends: 49685 [2024-10-12 16:32:53,896 INFO L226 Difference]: Without dead ends: 27603 [2024-10-12 16:32:53,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1140 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:53,912 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 660 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:53,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1060 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:32:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27603 states. [2024-10-12 16:32:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27603 to 26223. [2024-10-12 16:32:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26223 states, 26222 states have (on average 1.0799710167035315) internal successors, (28319), 26222 states have internal predecessors, (28319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26223 states to 26223 states and 28319 transitions. [2024-10-12 16:32:54,130 INFO L78 Accepts]: Start accepts. Automaton has 26223 states and 28319 transitions. Word has length 1137 [2024-10-12 16:32:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:54,130 INFO L471 AbstractCegarLoop]: Abstraction has 26223 states and 28319 transitions. [2024-10-12 16:32:54,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 26223 states and 28319 transitions. [2024-10-12 16:32:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2024-10-12 16:32:54,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:54,156 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:32:54,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 16:32:54,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 16:32:54,357 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:54,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2123144043, now seen corresponding path program 1 times [2024-10-12 16:32:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802188418] [2024-10-12 16:32:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1344 proven. 48 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-12 16:32:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:32:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802188418] [2024-10-12 16:32:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802188418] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:32:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205707409] [2024-10-12 16:32:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:55,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:55,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:32:55,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:32:55,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 16:32:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:32:55,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:32:55,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:32:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1360 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-10-12 16:32:55,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:32:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205707409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:32:55,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:32:55,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 16:32:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419266611] [2024-10-12 16:32:55,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:32:55,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:32:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:32:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:32:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:55,939 INFO L87 Difference]: Start difference. First operand 26223 states and 28319 transitions. Second operand has 3 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:57,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:32:57,539 INFO L93 Difference]: Finished difference Result 54515 states and 58765 transitions. [2024-10-12 16:32:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:32:57,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 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 1582 [2024-10-12 16:32:57,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:32:57,564 INFO L225 Difference]: With dead ends: 54515 [2024-10-12 16:32:57,564 INFO L226 Difference]: Without dead ends: 26223 [2024-10-12 16:32:57,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1582 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:32:57,580 INFO L432 NwaCegarLoop]: 1058 mSDtfsCounter, 652 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:32:57,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1063 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:32:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26223 states. [2024-10-12 16:32:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26223 to 25533. [2024-10-12 16:32:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 1.0361507128309573) internal successors, (26455), 25532 states have internal predecessors, (26455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 26455 transitions. [2024-10-12 16:32:57,779 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 26455 transitions. Word has length 1582 [2024-10-12 16:32:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:32:57,779 INFO L471 AbstractCegarLoop]: Abstraction has 25533 states and 26455 transitions. [2024-10-12 16:32:57,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:32:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 26455 transitions. [2024-10-12 16:32:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2024-10-12 16:32:57,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:32:57,807 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:32:57,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 16:32:58,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:32:58,008 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:32:58,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:32:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -694614780, now seen corresponding path program 1 times [2024-10-12 16:32:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:32:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091021760] [2024-10-12 16:32:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:32:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:32:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1465 proven. 437 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-10-12 16:33:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091021760] [2024-10-12 16:33:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091021760] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:33:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114537802] [2024-10-12 16:33:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:00,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:33:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:33:00,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:33:00,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 16:33:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:00,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:33:00,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:33:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1314 proven. 0 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2024-10-12 16:33:00,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:33:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114537802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:00,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:33:00,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:33:00,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008640464] [2024-10-12 16:33:00,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:00,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:00,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:33:00,804 INFO L87 Difference]: Start difference. First operand 25533 states and 26455 transitions. Second operand has 3 states, 3 states have (on average 364.3333333333333) internal successors, (1093), 3 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:02,117 INFO L93 Difference]: Finished difference Result 57275 states and 59494 transitions. [2024-10-12 16:33:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:02,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 364.3333333333333) internal successors, (1093), 3 states have internal predecessors, (1093), 0 states have call successors, (0), 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 1673 [2024-10-12 16:33:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:02,147 INFO L225 Difference]: With dead ends: 57275 [2024-10-12 16:33:02,147 INFO L226 Difference]: Without dead ends: 28983 [2024-10-12 16:33:02,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1673 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:33:02,165 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 183 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:02,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 856 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28983 states. [2024-10-12 16:33:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28983 to 28983. [2024-10-12 16:33:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0377820716306674) internal successors, (30077), 28982 states have internal predecessors, (30077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 30077 transitions. [2024-10-12 16:33:02,401 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 30077 transitions. Word has length 1673 [2024-10-12 16:33:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:02,402 INFO L471 AbstractCegarLoop]: Abstraction has 28983 states and 30077 transitions. [2024-10-12 16:33:02,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.3333333333333) internal successors, (1093), 3 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 30077 transitions. [2024-10-12 16:33:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2024-10-12 16:33:02,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:02,427 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:02,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 16:33:02,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:33:02,629 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:02,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1974066495, now seen corresponding path program 1 times [2024-10-12 16:33:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644124236] [2024-10-12 16:33:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 1699 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-10-12 16:33:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644124236] [2024-10-12 16:33:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644124236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195479929] [2024-10-12 16:33:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:03,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:03,505 INFO L87 Difference]: Start difference. First operand 28983 states and 30077 transitions. Second operand has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:04,846 INFO L93 Difference]: Finished difference Result 62795 states and 65283 transitions. [2024-10-12 16:33:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 0 states have call successors, (0), 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 1674 [2024-10-12 16:33:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:04,882 INFO L225 Difference]: With dead ends: 62795 [2024-10-12 16:33:04,882 INFO L226 Difference]: Without dead ends: 34503 [2024-10-12 16:33:04,901 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 [2024-10-12 16:33:04,902 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 574 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:04,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 921 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34503 states. [2024-10-12 16:33:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34503 to 34503. [2024-10-12 16:33:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34503 states, 34502 states have (on average 1.0359109616833806) internal successors, (35741), 34502 states have internal predecessors, (35741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34503 states to 34503 states and 35741 transitions. [2024-10-12 16:33:05,167 INFO L78 Accepts]: Start accepts. Automaton has 34503 states and 35741 transitions. Word has length 1674 [2024-10-12 16:33:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:05,167 INFO L471 AbstractCegarLoop]: Abstraction has 34503 states and 35741 transitions. [2024-10-12 16:33:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 34503 states and 35741 transitions. [2024-10-12 16:33:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1861 [2024-10-12 16:33:05,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:05,203 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:05,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:33:05,203 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:05,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2033082681, now seen corresponding path program 1 times [2024-10-12 16:33:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678381307] [2024-10-12 16:33:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:05,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3569 backedges. 2088 proven. 0 refuted. 0 times theorem prover too weak. 1481 trivial. 0 not checked. [2024-10-12 16:33:06,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:06,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678381307] [2024-10-12 16:33:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678381307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:06,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435992044] [2024-10-12 16:33:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:06,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:06,018 INFO L87 Difference]: Start difference. First operand 34503 states and 35741 transitions. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:07,344 INFO L93 Difference]: Finished difference Result 68315 states and 70790 transitions. [2024-10-12 16:33:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 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 1860 [2024-10-12 16:33:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:07,378 INFO L225 Difference]: With dead ends: 68315 [2024-10-12 16:33:07,378 INFO L226 Difference]: Without dead ends: 34503 [2024-10-12 16:33:07,397 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 [2024-10-12 16:33:07,398 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 586 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:07,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 261 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34503 states. [2024-10-12 16:33:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34503 to 33813. [2024-10-12 16:33:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33813 states, 33812 states have (on average 1.0300780787885957) internal successors, (34829), 33812 states have internal predecessors, (34829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33813 states to 33813 states and 34829 transitions. [2024-10-12 16:33:07,667 INFO L78 Accepts]: Start accepts. Automaton has 33813 states and 34829 transitions. Word has length 1860 [2024-10-12 16:33:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:07,667 INFO L471 AbstractCegarLoop]: Abstraction has 33813 states and 34829 transitions. [2024-10-12 16:33:07,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 33813 states and 34829 transitions. [2024-10-12 16:33:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1931 [2024-10-12 16:33:07,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:07,703 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:07,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:33:07,703 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:07,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash 22553179, now seen corresponding path program 1 times [2024-10-12 16:33:07,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:07,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856900780] [2024-10-12 16:33:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3870 backedges. 2699 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2024-10-12 16:33:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856900780] [2024-10-12 16:33:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856900780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929939859] [2024-10-12 16:33:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:08,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:08,569 INFO L87 Difference]: Start difference. First operand 33813 states and 34829 transitions. Second operand has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:09,914 INFO L93 Difference]: Finished difference Result 74525 states and 76748 transitions. [2024-10-12 16:33:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 0 states have call successors, (0), 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 1930 [2024-10-12 16:33:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:09,958 INFO L225 Difference]: With dead ends: 74525 [2024-10-12 16:33:09,959 INFO L226 Difference]: Without dead ends: 41403 [2024-10-12 16:33:09,981 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 [2024-10-12 16:33:09,981 INFO L432 NwaCegarLoop]: 967 mSDtfsCounter, 591 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:09,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 973 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2024-10-12 16:33:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 40023. [2024-10-12 16:33:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40023 states, 40022 states have (on average 1.0274099245415023) internal successors, (41119), 40022 states have internal predecessors, (41119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40023 states to 40023 states and 41119 transitions. [2024-10-12 16:33:10,318 INFO L78 Accepts]: Start accepts. Automaton has 40023 states and 41119 transitions. Word has length 1930 [2024-10-12 16:33:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:10,319 INFO L471 AbstractCegarLoop]: Abstraction has 40023 states and 41119 transitions. [2024-10-12 16:33:10,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 40023 states and 41119 transitions. [2024-10-12 16:33:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1966 [2024-10-12 16:33:10,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:10,356 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:10,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:33:10,356 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:10,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash -606628830, now seen corresponding path program 1 times [2024-10-12 16:33:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539573137] [2024-10-12 16:33:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 2547 proven. 330 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2024-10-12 16:33:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539573137] [2024-10-12 16:33:12,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539573137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:33:12,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215266170] [2024-10-12 16:33:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:12,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:33:12,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:33:12,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:33:12,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 16:33:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:13,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:33:13,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:33:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 2446 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2024-10-12 16:33:13,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:33:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215266170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:13,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:33:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-12 16:33:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986318367] [2024-10-12 16:33:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:13,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:33:13,407 INFO L87 Difference]: Start difference. First operand 40023 states and 41119 transitions. Second operand has 3 states, 3 states have (on average 376.3333333333333) internal successors, (1129), 3 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:14,764 INFO L93 Difference]: Finished difference Result 79355 states and 81546 transitions. [2024-10-12 16:33:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 376.3333333333333) internal successors, (1129), 3 states have internal predecessors, (1129), 0 states have call successors, (0), 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 1965 [2024-10-12 16:33:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:14,802 INFO L225 Difference]: With dead ends: 79355 [2024-10-12 16:33:14,803 INFO L226 Difference]: Without dead ends: 40023 [2024-10-12 16:33:14,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1971 GetRequests, 1964 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:33:14,817 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 624 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:14,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 932 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:33:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40023 states. [2024-10-12 16:33:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40023 to 40023. [2024-10-12 16:33:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40023 states, 40022 states have (on average 1.0236619859077507) internal successors, (40969), 40022 states have internal predecessors, (40969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40023 states to 40023 states and 40969 transitions. [2024-10-12 16:33:15,138 INFO L78 Accepts]: Start accepts. Automaton has 40023 states and 40969 transitions. Word has length 1965 [2024-10-12 16:33:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:15,139 INFO L471 AbstractCegarLoop]: Abstraction has 40023 states and 40969 transitions. [2024-10-12 16:33:15,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 376.3333333333333) internal successors, (1129), 3 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40023 states and 40969 transitions. [2024-10-12 16:33:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1968 [2024-10-12 16:33:15,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:15,175 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:15,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 16:33:15,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:33:15,376 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:15,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash 558722126, now seen corresponding path program 1 times [2024-10-12 16:33:15,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:15,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336870523] [2024-10-12 16:33:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4111 backedges. 2766 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-10-12 16:33:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336870523] [2024-10-12 16:33:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336870523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248239909] [2024-10-12 16:33:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:16,125 INFO L87 Difference]: Start difference. First operand 40023 states and 40969 transitions. Second operand has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:17,627 INFO L93 Difference]: Finished difference Result 100745 states and 103297 transitions. [2024-10-12 16:33:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 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 1967 [2024-10-12 16:33:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:17,696 INFO L225 Difference]: With dead ends: 100745 [2024-10-12 16:33:17,696 INFO L226 Difference]: Without dead ends: 60723 [2024-10-12 16:33:17,726 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 [2024-10-12 16:33:17,727 INFO L432 NwaCegarLoop]: 875 mSDtfsCounter, 548 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:17,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 881 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60723 states. [2024-10-12 16:33:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60723 to 60723. [2024-10-12 16:33:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60723 states, 60722 states have (on average 1.0221830637989526) internal successors, (62069), 60722 states have internal predecessors, (62069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:18,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60723 states to 60723 states and 62069 transitions. [2024-10-12 16:33:18,386 INFO L78 Accepts]: Start accepts. Automaton has 60723 states and 62069 transitions. Word has length 1967 [2024-10-12 16:33:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:18,387 INFO L471 AbstractCegarLoop]: Abstraction has 60723 states and 62069 transitions. [2024-10-12 16:33:18,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:18,387 INFO L276 IsEmpty]: Start isEmpty. Operand 60723 states and 62069 transitions. [2024-10-12 16:33:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1991 [2024-10-12 16:33:18,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:18,448 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:18,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 16:33:18,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:18,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1571274677, now seen corresponding path program 1 times [2024-10-12 16:33:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:18,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480104249] [2024-10-12 16:33:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:18,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3776 backedges. 1659 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2024-10-12 16:33:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480104249] [2024-10-12 16:33:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480104249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:19,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638821860] [2024-10-12 16:33:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:19,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:19,913 INFO L87 Difference]: Start difference. First operand 60723 states and 62069 transitions. Second operand has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:21,384 INFO L93 Difference]: Finished difference Result 134555 states and 137745 transitions. [2024-10-12 16:33:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:21,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 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 1990 [2024-10-12 16:33:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:21,468 INFO L225 Difference]: With dead ends: 134555 [2024-10-12 16:33:21,468 INFO L226 Difference]: Without dead ends: 74523 [2024-10-12 16:33:21,508 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 [2024-10-12 16:33:21,508 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 154 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:21,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 257 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:33:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74523 states. [2024-10-12 16:33:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74523 to 68313. [2024-10-12 16:33:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68313 states, 68312 states have (on average 1.021445719639302) internal successors, (69777), 68312 states have internal predecessors, (69777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68313 states to 68313 states and 69777 transitions. [2024-10-12 16:33:22,194 INFO L78 Accepts]: Start accepts. Automaton has 68313 states and 69777 transitions. Word has length 1990 [2024-10-12 16:33:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:22,195 INFO L471 AbstractCegarLoop]: Abstraction has 68313 states and 69777 transitions. [2024-10-12 16:33:22,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 68313 states and 69777 transitions. [2024-10-12 16:33:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2002 [2024-10-12 16:33:22,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:22,255 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:33:22,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:33:22,256 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:22,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 396133337, now seen corresponding path program 1 times [2024-10-12 16:33:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244791601] [2024-10-12 16:33:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 2844 proven. 0 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-10-12 16:33:23,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:23,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244791601] [2024-10-12 16:33:23,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244791601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:23,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:23,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:33:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366396045] [2024-10-12 16:33:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:23,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:23,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:23,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:33:23,367 INFO L87 Difference]: Start difference. First operand 68313 states and 69777 transitions. Second operand has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:25,194 INFO L93 Difference]: Finished difference Result 158705 states and 162186 transitions. [2024-10-12 16:33:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:33:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 0 states have call successors, (0), 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 2001 [2024-10-12 16:33:25,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:25,293 INFO L225 Difference]: With dead ends: 158705 [2024-10-12 16:33:25,293 INFO L226 Difference]: Without dead ends: 91083 [2024-10-12 16:33:25,330 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 [2024-10-12 16:33:25,330 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 526 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:25,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 108 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:33:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91083 states. [2024-10-12 16:33:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91083 to 88323. [2024-10-12 16:33:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88323 states, 88322 states have (on average 1.020266751205815) internal successors, (90112), 88322 states have internal predecessors, (90112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88323 states to 88323 states and 90112 transitions. [2024-10-12 16:33:26,344 INFO L78 Accepts]: Start accepts. Automaton has 88323 states and 90112 transitions. Word has length 2001 [2024-10-12 16:33:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:26,345 INFO L471 AbstractCegarLoop]: Abstraction has 88323 states and 90112 transitions. [2024-10-12 16:33:26,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 88323 states and 90112 transitions. [2024-10-12 16:33:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2020 [2024-10-12 16:33:26,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:26,445 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:26,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 16:33:26,445 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:26,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash -658214957, now seen corresponding path program 1 times [2024-10-12 16:33:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022331204] [2024-10-12 16:33:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3552 backedges. 1690 proven. 0 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2024-10-12 16:33:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022331204] [2024-10-12 16:33:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022331204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:28,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:33:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:33:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216782527] [2024-10-12 16:33:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:28,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:33:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:33:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:33:28,604 INFO L87 Difference]: Start difference. First operand 88323 states and 90112 transitions. Second operand has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:33:30,337 INFO L93 Difference]: Finished difference Result 100074 states and 102064 transitions. [2024-10-12 16:33:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:33:30,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 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 2019 [2024-10-12 16:33:30,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:33:30,449 INFO L225 Difference]: With dead ends: 100074 [2024-10-12 16:33:30,449 INFO L226 Difference]: Without dead ends: 99363 [2024-10-12 16:33:30,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:33:30,476 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 188 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:33:30,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 138 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:33:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99363 states. [2024-10-12 16:33:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99363 to 89703. [2024-10-12 16:33:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89703 states, 89702 states have (on average 1.0204008829234577) internal successors, (91532), 89702 states have internal predecessors, (91532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89703 states to 89703 states and 91532 transitions. [2024-10-12 16:33:31,787 INFO L78 Accepts]: Start accepts. Automaton has 89703 states and 91532 transitions. Word has length 2019 [2024-10-12 16:33:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:33:31,792 INFO L471 AbstractCegarLoop]: Abstraction has 89703 states and 91532 transitions. [2024-10-12 16:33:31,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:33:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 89703 states and 91532 transitions. [2024-10-12 16:33:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2192 [2024-10-12 16:33:31,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:33:31,876 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:33:31,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:33:31,876 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:33:31,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:33:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1679407072, now seen corresponding path program 1 times [2024-10-12 16:33:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:33:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810578746] [2024-10-12 16:33:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:33:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1844 proven. 18 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2024-10-12 16:33:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:33:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810578746] [2024-10-12 16:33:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810578746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:33:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604390189] [2024-10-12 16:33:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:33:34,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:33:34,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:33:34,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:33:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 16:33:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:33:34,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:33:34,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:33:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1862 proven. 0 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2024-10-12 16:33:35,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:33:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604390189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:33:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:33:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-12 16:33:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694781699] [2024-10-12 16:33:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:33:35,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:33:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:33:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:33:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:33:35,312 INFO L87 Difference]: Start difference. First operand 89703 states and 91532 transitions. Second operand has 3 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)