./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/Problem15_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label13.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 5a19424d0456c6718774c0e7f98c7314f15d1f859d3e4c4b58b43cec62bc198b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:19:48,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:19:48,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:19:48,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:19:48,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:19:48,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:19:48,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:19:48,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:19:48,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:19:48,161 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:19:48,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:19:48,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:19:48,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:19:48,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:19:48,163 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:19:48,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:19:48,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:19:48,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:19:48,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:19:48,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:19:48,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:19:48,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:19:48,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:19:48,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:19:48,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:19:48,170 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:19:48,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:19:48,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:19:48,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:19:48,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:19:48,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:19:48,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:19:48,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:19:48,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:19:48,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:19:48,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:19:48,173 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:19:48,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:19:48,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:19:48,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:19:48,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:19:48,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:19:48,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a19424d0456c6718774c0e7f98c7314f15d1f859d3e4c4b58b43cec62bc198b [2024-10-23 21:19:48,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:19:48,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:19:48,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:19:48,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:19:48,438 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:19:48,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label13.c [2024-10-23 21:19:49,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:19:50,248 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:19:50,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label13.c [2024-10-23 21:19:50,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3639d935/13ccbe8b6ad84f968aaf073178cfa417/FLAG9acb1c754 [2024-10-23 21:19:50,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3639d935/13ccbe8b6ad84f968aaf073178cfa417 [2024-10-23 21:19:50,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:19:50,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:19:50,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:19:50,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:19:50,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:19:50,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:19:50" (1/1) ... [2024-10-23 21:19:50,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207f958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:50, skipping insertion in model container [2024-10-23 21:19:50,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:19:50" (1/1) ... [2024-10-23 21:19:50,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:19:50,669 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/Problem15_label13.c[5940,5953] [2024-10-23 21:19:50,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:19:51,001 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:19:51,030 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/Problem15_label13.c[5940,5953] [2024-10-23 21:19:51,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:19:51,228 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:19:51,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51 WrapperNode [2024-10-23 21:19:51,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:19:51,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:19:51,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:19:51,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:19:51,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,571 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-23 21:19:51,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:19:51,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:19:51,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:19:51,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:19:51,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,720 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:19:51,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:19:51,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:19:51,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:19:51,936 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:19:51,937 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (1/1) ... [2024-10-23 21:19:51,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:19:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:51,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:19:52,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:19:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:19:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:19:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:19:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:19:52,129 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:19:52,131 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:19:54,468 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-23 21:19:54,469 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:19:54,538 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:19:54,539 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:19:54,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:19:54 BoogieIcfgContainer [2024-10-23 21:19:54,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:19:54,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:19:54,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:19:54,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:19:54,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:19:50" (1/3) ... [2024-10-23 21:19:54,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d734649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:19:54, skipping insertion in model container [2024-10-23 21:19:54,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:19:51" (2/3) ... [2024-10-23 21:19:54,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d734649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:19:54, skipping insertion in model container [2024-10-23 21:19:54,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:19:54" (3/3) ... [2024-10-23 21:19:54,550 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label13.c [2024-10-23 21:19:54,567 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:19:54,567 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:19:54,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:19:54,660 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;@6475d6c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:19:54,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:19:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-23 21:19:54,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:54,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:54,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:54,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -536406878, now seen corresponding path program 1 times [2024-10-23 21:19:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194171454] [2024-10-23 21:19:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:54,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194171454] [2024-10-23 21:19:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194171454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:54,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:54,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:54,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340058892] [2024-10-23 21:19:54,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:54,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:19:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:19:54,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:19:54,912 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:54,986 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-23 21:19:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:19:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-10-23 21:19:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:55,004 INFO L225 Difference]: With dead ends: 723 [2024-10-23 21:19:55,005 INFO L226 Difference]: Without dead ends: 360 [2024-10-23 21:19:55,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:19:55,015 INFO L432 NwaCegarLoop]: 623 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, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:55,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:19:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-23 21:19:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-23 21:19:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-23 21:19:55,076 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 47 [2024-10-23 21:19:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:55,076 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-23 21:19:55,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-23 21:19:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-23 21:19:55,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:55,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:55,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:19:55,079 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:55,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1820923160, now seen corresponding path program 1 times [2024-10-23 21:19:55,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:55,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938471283] [2024-10-23 21:19:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:55,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938471283] [2024-10-23 21:19:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938471283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:55,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:55,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578078202] [2024-10-23 21:19:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:55,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:55,342 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:56,980 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2024-10-23 21:19:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:56,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-10-23 21:19:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:56,985 INFO L225 Difference]: With dead ends: 1025 [2024-10-23 21:19:56,985 INFO L226 Difference]: Without dead ends: 666 [2024-10-23 21:19:56,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:56,987 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 280 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:56,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:19:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-23 21:19:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2024-10-23 21:19:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2024-10-23 21:19:57,032 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 47 [2024-10-23 21:19:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:57,033 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2024-10-23 21:19:57,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2024-10-23 21:19:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-23 21:19:57,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:57,038 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:57,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:19:57,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:57,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash -952981529, now seen corresponding path program 1 times [2024-10-23 21:19:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:57,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720128878] [2024-10-23 21:19:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720128878] [2024-10-23 21:19:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720128878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:57,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:57,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:57,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977333566] [2024-10-23 21:19:57,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:57,265 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:58,877 INFO L93 Difference]: Finished difference Result 1952 states and 2892 transitions. [2024-10-23 21:19:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:58,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2024-10-23 21:19:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:58,882 INFO L225 Difference]: With dead ends: 1952 [2024-10-23 21:19:58,882 INFO L226 Difference]: Without dead ends: 1289 [2024-10-23 21:19:58,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:58,887 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 256 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:58,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 324 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:19:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-10-23 21:19:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1281. [2024-10-23 21:19:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3984375) internal successors, (1790), 1280 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1790 transitions. [2024-10-23 21:19:58,913 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1790 transitions. Word has length 122 [2024-10-23 21:19:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:58,914 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1790 transitions. [2024-10-23 21:19:58,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1790 transitions. [2024-10-23 21:19:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-23 21:19:58,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:58,917 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:58,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:19:58,917 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:58,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 761477533, now seen corresponding path program 1 times [2024-10-23 21:19:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514566440] [2024-10-23 21:19:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:19:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:59,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514566440] [2024-10-23 21:19:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514566440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:59,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:19:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567783036] [2024-10-23 21:19:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:59,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:59,142 INFO L87 Difference]: Start difference. First operand 1281 states and 1790 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:00,975 INFO L93 Difference]: Finished difference Result 3763 states and 5259 transitions. [2024-10-23 21:20:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:00,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-23 21:20:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:00,986 INFO L225 Difference]: With dead ends: 3763 [2024-10-23 21:20:00,986 INFO L226 Difference]: Without dead ends: 2483 [2024-10-23 21:20:00,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:00,991 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:00,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:20:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-10-23 21:20:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2024-10-23 21:20:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.2811926605504587) internal successors, (2793), 2180 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2793 transitions. [2024-10-23 21:20:01,028 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2793 transitions. Word has length 126 [2024-10-23 21:20:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:01,030 INFO L471 AbstractCegarLoop]: Abstraction has 2181 states and 2793 transitions. [2024-10-23 21:20:01,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2793 transitions. [2024-10-23 21:20:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-23 21:20:01,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:01,037 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:01,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:20:01,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:01,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1598072451, now seen corresponding path program 1 times [2024-10-23 21:20:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897453232] [2024-10-23 21:20:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-23 21:20:01,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897453232] [2024-10-23 21:20:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897453232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:01,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:01,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:01,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660590493] [2024-10-23 21:20:01,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:01,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:01,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:01,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:01,359 INFO L87 Difference]: Start difference. First operand 2181 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:02,592 INFO L93 Difference]: Finished difference Result 6165 states and 7957 transitions. [2024-10-23 21:20:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 217 [2024-10-23 21:20:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:02,605 INFO L225 Difference]: With dead ends: 6165 [2024-10-23 21:20:02,605 INFO L226 Difference]: Without dead ends: 3985 [2024-10-23 21:20:02,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:02,609 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:02,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:20:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2024-10-23 21:20:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2024-10-23 21:20:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2195652173913043) internal successors, (4488), 3680 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4488 transitions. [2024-10-23 21:20:02,671 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4488 transitions. Word has length 217 [2024-10-23 21:20:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:02,672 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4488 transitions. [2024-10-23 21:20:02,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4488 transitions. [2024-10-23 21:20:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-23 21:20:02,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:02,676 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:02,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:20:02,677 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:02,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash -278960253, now seen corresponding path program 1 times [2024-10-23 21:20:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:02,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487907833] [2024-10-23 21:20:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-23 21:20:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487907833] [2024-10-23 21:20:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487907833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:03,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:03,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:20:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573878238] [2024-10-23 21:20:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:03,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:03,525 INFO L87 Difference]: Start difference. First operand 3681 states and 4488 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:04,639 INFO L93 Difference]: Finished difference Result 7660 states and 9286 transitions. [2024-10-23 21:20:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 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 319 [2024-10-23 21:20:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:04,654 INFO L225 Difference]: With dead ends: 7660 [2024-10-23 21:20:04,654 INFO L226 Difference]: Without dead ends: 3980 [2024-10-23 21:20:04,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:04,659 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:04,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2024-10-23 21:20:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2024-10-23 21:20:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.204574013571249) internal successors, (4793), 3979 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4793 transitions. [2024-10-23 21:20:04,721 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4793 transitions. Word has length 319 [2024-10-23 21:20:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:04,721 INFO L471 AbstractCegarLoop]: Abstraction has 3980 states and 4793 transitions. [2024-10-23 21:20:04,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4793 transitions. [2024-10-23 21:20:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-10-23 21:20:04,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:04,726 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:20:04,726 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:04,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 776705032, now seen corresponding path program 1 times [2024-10-23 21:20:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292951135] [2024-10-23 21:20:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:20:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292951135] [2024-10-23 21:20:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292951135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233443145] [2024-10-23 21:20:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:05,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:05,069 INFO L87 Difference]: Start difference. First operand 3980 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:06,692 INFO L93 Difference]: Finished difference Result 9464 states and 11667 transitions. [2024-10-23 21:20:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 334 [2024-10-23 21:20:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:06,712 INFO L225 Difference]: With dead ends: 9464 [2024-10-23 21:20:06,713 INFO L226 Difference]: Without dead ends: 5784 [2024-10-23 21:20:06,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:06,718 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 268 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:06,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:20:06,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2024-10-23 21:20:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5782. [2024-10-23 21:20:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5781 states have (on average 1.1672720982528975) internal successors, (6748), 5781 states have internal predecessors, (6748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6748 transitions. [2024-10-23 21:20:06,806 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6748 transitions. Word has length 334 [2024-10-23 21:20:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:06,807 INFO L471 AbstractCegarLoop]: Abstraction has 5782 states and 6748 transitions. [2024-10-23 21:20:06,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6748 transitions. [2024-10-23 21:20:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-10-23 21:20:06,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:06,813 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:06,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:20:06,814 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:06,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1860848299, now seen corresponding path program 1 times [2024-10-23 21:20:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874156198] [2024-10-23 21:20:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 21:20:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874156198] [2024-10-23 21:20:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874156198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:07,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:07,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:07,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725744768] [2024-10-23 21:20:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:07,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:07,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:07,211 INFO L87 Difference]: Start difference. First operand 5782 states and 6748 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:08,744 INFO L93 Difference]: Finished difference Result 14277 states and 16789 transitions. [2024-10-23 21:20:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 393 [2024-10-23 21:20:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:08,776 INFO L225 Difference]: With dead ends: 14277 [2024-10-23 21:20:08,776 INFO L226 Difference]: Without dead ends: 8795 [2024-10-23 21:20:08,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:08,785 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 289 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:08,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 538 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:20:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2024-10-23 21:20:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8780. [2024-10-23 21:20:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8780 states, 8779 states have (on average 1.145688575008543) internal successors, (10058), 8779 states have internal predecessors, (10058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 10058 transitions. [2024-10-23 21:20:08,920 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 10058 transitions. Word has length 393 [2024-10-23 21:20:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:08,920 INFO L471 AbstractCegarLoop]: Abstraction has 8780 states and 10058 transitions. [2024-10-23 21:20:08,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 10058 transitions. [2024-10-23 21:20:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-10-23 21:20:08,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:08,927 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:08,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:20:08,928 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:08,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash 88467717, now seen corresponding path program 1 times [2024-10-23 21:20:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208350942] [2024-10-23 21:20:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:20:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208350942] [2024-10-23 21:20:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208350942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 21:20:09,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486361104] [2024-10-23 21:20:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:09,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:20:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:20:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:20:09,657 INFO L87 Difference]: Start difference. First operand 8780 states and 10058 transitions. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:11,542 INFO L93 Difference]: Finished difference Result 20297 states and 23624 transitions. [2024-10-23 21:20:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:20:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2024-10-23 21:20:11,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:11,585 INFO L225 Difference]: With dead ends: 20297 [2024-10-23 21:20:11,585 INFO L226 Difference]: Without dead ends: 11817 [2024-10-23 21:20:11,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:20:11,595 INFO L432 NwaCegarLoop]: 582 mSDtfsCounter, 355 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:11,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 678 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:20:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2024-10-23 21:20:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 11171. [2024-10-23 21:20:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11171 states, 11170 states have (on average 1.1314234556848701) internal successors, (12638), 11170 states have internal predecessors, (12638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11171 states to 11171 states and 12638 transitions. [2024-10-23 21:20:11,739 INFO L78 Accepts]: Start accepts. Automaton has 11171 states and 12638 transitions. Word has length 412 [2024-10-23 21:20:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:11,741 INFO L471 AbstractCegarLoop]: Abstraction has 11171 states and 12638 transitions. [2024-10-23 21:20:11,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11171 states and 12638 transitions. [2024-10-23 21:20:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-10-23 21:20:11,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:11,753 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:11,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:20:11,753 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:11,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash 77193200, now seen corresponding path program 1 times [2024-10-23 21:20:11,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63235893] [2024-10-23 21:20:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:11,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 421 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-23 21:20:12,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63235893] [2024-10-23 21:20:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63235893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741961612] [2024-10-23 21:20:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:12,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:12,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:12,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:12,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:20:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:12,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:12,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-23 21:20:13,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741961612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:13,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22842377] [2024-10-23 21:20:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:13,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:13,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:13,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:13,080 INFO L87 Difference]: Start difference. First operand 11171 states and 12638 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:14,641 INFO L93 Difference]: Finished difference Result 25630 states and 29232 transitions. [2024-10-23 21:20:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 523 [2024-10-23 21:20:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:14,666 INFO L225 Difference]: With dead ends: 25630 [2024-10-23 21:20:14,666 INFO L226 Difference]: Without dead ends: 14759 [2024-10-23 21:20:14,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:14,679 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 122 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:14,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:20:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14759 states. [2024-10-23 21:20:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14759 to 9072. [2024-10-23 21:20:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9072 states, 9071 states have (on average 1.1470620659243744) internal successors, (10405), 9071 states have internal predecessors, (10405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9072 states to 9072 states and 10405 transitions. [2024-10-23 21:20:14,892 INFO L78 Accepts]: Start accepts. Automaton has 9072 states and 10405 transitions. Word has length 523 [2024-10-23 21:20:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:14,893 INFO L471 AbstractCegarLoop]: Abstraction has 9072 states and 10405 transitions. [2024-10-23 21:20:14,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9072 states and 10405 transitions. [2024-10-23 21:20:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-10-23 21:20:14,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:14,904 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:14,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:20:15,105 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,SelfDestructingSolverStorable9 [2024-10-23 21:20:15,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:15,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash 768208417, now seen corresponding path program 1 times [2024-10-23 21:20:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:15,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571899281] [2024-10-23 21:20:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:15,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 501 proven. 39 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-10-23 21:20:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571899281] [2024-10-23 21:20:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571899281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131418797] [2024-10-23 21:20:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:15,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:15,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:15,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:20:15,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:20:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:16,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:16,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-10-23 21:20:16,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131418797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:16,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:16,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514434214] [2024-10-23 21:20:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:16,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:16,316 INFO L87 Difference]: Start difference. First operand 9072 states and 10405 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:17,752 INFO L93 Difference]: Finished difference Result 20534 states and 23945 transitions. [2024-10-23 21:20:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:17,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2024-10-23 21:20:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:17,773 INFO L225 Difference]: With dead ends: 20534 [2024-10-23 21:20:17,773 INFO L226 Difference]: Without dead ends: 11762 [2024-10-23 21:20:17,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:17,786 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 369 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:17,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:20:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2024-10-23 21:20:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11762. [2024-10-23 21:20:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11762 states, 11761 states have (on average 1.157639656491795) internal successors, (13615), 11761 states have internal predecessors, (13615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11762 states to 11762 states and 13615 transitions. [2024-10-23 21:20:17,918 INFO L78 Accepts]: Start accepts. Automaton has 11762 states and 13615 transitions. Word has length 531 [2024-10-23 21:20:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:17,920 INFO L471 AbstractCegarLoop]: Abstraction has 11762 states and 13615 transitions. [2024-10-23 21:20:17,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 11762 states and 13615 transitions. [2024-10-23 21:20:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-10-23 21:20:17,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:17,928 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:20:17,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:20:18,128 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,SelfDestructingSolverStorable10 [2024-10-23 21:20:18,129 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:18,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash -801126248, now seen corresponding path program 1 times [2024-10-23 21:20:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935622115] [2024-10-23 21:20:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-10-23 21:20:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935622115] [2024-10-23 21:20:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935622115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:18,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:18,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074899249] [2024-10-23 21:20:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:18,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:18,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:18,662 INFO L87 Difference]: Start difference. First operand 11762 states and 13615 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:20,089 INFO L93 Difference]: Finished difference Result 26840 states and 31361 transitions. [2024-10-23 21:20:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 574 [2024-10-23 21:20:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:20,116 INFO L225 Difference]: With dead ends: 26840 [2024-10-23 21:20:20,116 INFO L226 Difference]: Without dead ends: 15378 [2024-10-23 21:20:20,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:20,130 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 290 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:20,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 347 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:20:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2024-10-23 21:20:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 11765. [2024-10-23 21:20:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11765 states, 11764 states have (on average 1.157684461067664) internal successors, (13619), 11764 states have internal predecessors, (13619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11765 states to 11765 states and 13619 transitions. [2024-10-23 21:20:20,272 INFO L78 Accepts]: Start accepts. Automaton has 11765 states and 13619 transitions. Word has length 574 [2024-10-23 21:20:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:20,273 INFO L471 AbstractCegarLoop]: Abstraction has 11765 states and 13619 transitions. [2024-10-23 21:20:20,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 11765 states and 13619 transitions. [2024-10-23 21:20:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-10-23 21:20:20,284 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:20,285 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:20,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:20:20,285 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:20,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -485763724, now seen corresponding path program 1 times [2024-10-23 21:20:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542401838] [2024-10-23 21:20:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 658 proven. 39 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-10-23 21:20:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542401838] [2024-10-23 21:20:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542401838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897106242] [2024-10-23 21:20:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:21,071 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) [2024-10-23 21:20:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:20:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:21,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:21,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-10-23 21:20:21,368 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897106242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:21,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825284948] [2024-10-23 21:20:21,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:21,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:21,374 INFO L87 Difference]: Start difference. First operand 11765 states and 13619 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:22,736 INFO L93 Difference]: Finished difference Result 26221 states and 30909 transitions. [2024-10-23 21:20:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:22,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 610 [2024-10-23 21:20:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:22,754 INFO L225 Difference]: With dead ends: 26221 [2024-10-23 21:20:22,755 INFO L226 Difference]: Without dead ends: 14756 [2024-10-23 21:20:22,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:22,768 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 282 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:22,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 611 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:20:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14756 states. [2024-10-23 21:20:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14756 to 14456. [2024-10-23 21:20:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14456 states, 14455 states have (on average 1.1356624005534417) internal successors, (16416), 14455 states have internal predecessors, (16416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14456 states to 14456 states and 16416 transitions. [2024-10-23 21:20:22,922 INFO L78 Accepts]: Start accepts. Automaton has 14456 states and 16416 transitions. Word has length 610 [2024-10-23 21:20:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:22,923 INFO L471 AbstractCegarLoop]: Abstraction has 14456 states and 16416 transitions. [2024-10-23 21:20:22,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 14456 states and 16416 transitions. [2024-10-23 21:20:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-10-23 21:20:22,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:22,935 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:20:22,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:20:23,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:23,140 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:23,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2006892852, now seen corresponding path program 1 times [2024-10-23 21:20:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337979623] [2024-10-23 21:20:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-23 21:20:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337979623] [2024-10-23 21:20:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337979623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:23,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:20:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212586111] [2024-10-23 21:20:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:23,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:23,761 INFO L87 Difference]: Start difference. First operand 14456 states and 16416 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:25,244 INFO L93 Difference]: Finished difference Result 36982 states and 41953 transitions. [2024-10-23 21:20:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:25,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 615 [2024-10-23 21:20:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:25,268 INFO L225 Difference]: With dead ends: 36982 [2024-10-23 21:20:25,268 INFO L226 Difference]: Without dead ends: 22826 [2024-10-23 21:20:25,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:20:25,282 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 172 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:25,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 224 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:20:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22826 states. [2024-10-23 21:20:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22826 to 19238. [2024-10-23 21:20:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 19237 states have (on average 1.1266829547226698) internal successors, (21674), 19237 states have internal predecessors, (21674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 21674 transitions. [2024-10-23 21:20:25,486 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 21674 transitions. Word has length 615 [2024-10-23 21:20:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:25,486 INFO L471 AbstractCegarLoop]: Abstraction has 19238 states and 21674 transitions. [2024-10-23 21:20:25,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 21674 transitions. [2024-10-23 21:20:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2024-10-23 21:20:25,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:25,511 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:25,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:20:25,512 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:25,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1126810958, now seen corresponding path program 1 times [2024-10-23 21:20:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:25,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097782651] [2024-10-23 21:20:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 840 proven. 39 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-10-23 21:20:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097782651] [2024-10-23 21:20:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097782651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142660515] [2024-10-23 21:20:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:26,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:26,302 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) [2024-10-23 21:20:26,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:20:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:26,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:20:26,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 879 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-10-23 21:20:27,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:27,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142660515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:20:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578777018] [2024-10-23 21:20:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:27,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:27,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:20:27,385 INFO L87 Difference]: Start difference. First operand 19238 states and 21674 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:28,987 INFO L93 Difference]: Finished difference Result 39673 states and 44667 transitions. [2024-10-23 21:20:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:20:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 766 [2024-10-23 21:20:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:29,005 INFO L225 Difference]: With dead ends: 39673 [2024-10-23 21:20:29,005 INFO L226 Difference]: Without dead ends: 20436 [2024-10-23 21:20:29,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:20:29,017 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:29,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 385 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:20:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20436 states. [2024-10-23 21:20:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20436 to 20136. [2024-10-23 21:20:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20136 states, 20135 states have (on average 1.122373975664266) internal successors, (22599), 20135 states have internal predecessors, (22599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20136 states to 20136 states and 22599 transitions. [2024-10-23 21:20:29,214 INFO L78 Accepts]: Start accepts. Automaton has 20136 states and 22599 transitions. Word has length 766 [2024-10-23 21:20:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:29,215 INFO L471 AbstractCegarLoop]: Abstraction has 20136 states and 22599 transitions. [2024-10-23 21:20:29,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20136 states and 22599 transitions. [2024-10-23 21:20:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2024-10-23 21:20:29,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:29,236 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:29,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:20:29,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 21:20:29,437 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:29,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -256951802, now seen corresponding path program 1 times [2024-10-23 21:20:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588634563] [2024-10-23 21:20:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-10-23 21:20:30,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588634563] [2024-10-23 21:20:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588634563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:30,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:30,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:20:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204755493] [2024-10-23 21:20:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:30,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:20:30,415 INFO L87 Difference]: Start difference. First operand 20136 states and 22599 transitions. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:32,054 INFO L93 Difference]: Finished difference Result 42734 states and 47876 transitions. [2024-10-23 21:20:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:20:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 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 779 [2024-10-23 21:20:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:32,078 INFO L225 Difference]: With dead ends: 42734 [2024-10-23 21:20:32,078 INFO L226 Difference]: Without dead ends: 22599 [2024-10-23 21:20:32,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:20:32,095 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 285 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:32,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 642 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:20:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22599 states. [2024-10-23 21:20:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22599 to 21631. [2024-10-23 21:20:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21631 states, 21630 states have (on average 1.1202958853444291) internal successors, (24232), 21630 states have internal predecessors, (24232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21631 states to 21631 states and 24232 transitions. [2024-10-23 21:20:32,334 INFO L78 Accepts]: Start accepts. Automaton has 21631 states and 24232 transitions. Word has length 779 [2024-10-23 21:20:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:32,335 INFO L471 AbstractCegarLoop]: Abstraction has 21631 states and 24232 transitions. [2024-10-23 21:20:32,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 21631 states and 24232 transitions. [2024-10-23 21:20:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-10-23 21:20:32,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:32,354 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:32,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:20:32,354 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:32,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash -173259596, now seen corresponding path program 1 times [2024-10-23 21:20:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247508426] [2024-10-23 21:20:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-10-23 21:20:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247508426] [2024-10-23 21:20:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247508426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:33,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:20:33,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799420644] [2024-10-23 21:20:33,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:33,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:20:33,413 INFO L87 Difference]: Start difference. First operand 21631 states and 24232 transitions. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:35,558 INFO L93 Difference]: Finished difference Result 54976 states and 61528 transitions. [2024-10-23 21:20:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:20:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 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 785 [2024-10-23 21:20:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:35,598 INFO L225 Difference]: With dead ends: 54976 [2024-10-23 21:20:35,598 INFO L226 Difference]: Without dead ends: 33346 [2024-10-23 21:20:35,614 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 [2024-10-23 21:20:35,614 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 453 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:35,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 170 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:20:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33346 states. [2024-10-23 21:20:35,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33346 to 26127. [2024-10-23 21:20:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26127 states, 26126 states have (on average 1.1249330169180127) internal successors, (29390), 26126 states have internal predecessors, (29390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26127 states to 26127 states and 29390 transitions. [2024-10-23 21:20:35,862 INFO L78 Accepts]: Start accepts. Automaton has 26127 states and 29390 transitions. Word has length 785 [2024-10-23 21:20:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:35,862 INFO L471 AbstractCegarLoop]: Abstraction has 26127 states and 29390 transitions. [2024-10-23 21:20:35,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26127 states and 29390 transitions. [2024-10-23 21:20:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2024-10-23 21:20:35,883 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:35,883 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, 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, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:35,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:20:35,884 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:35,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1095958053, now seen corresponding path program 1 times [2024-10-23 21:20:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295276385] [2024-10-23 21:20:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-23 21:20:36,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:36,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295276385] [2024-10-23 21:20:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295276385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:20:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:20:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149134206] [2024-10-23 21:20:36,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:36,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:20:36,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:20:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:20:36,504 INFO L87 Difference]: Start difference. First operand 26127 states and 29390 transitions. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:38,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:38,287 INFO L93 Difference]: Finished difference Result 63920 states and 71479 transitions. [2024-10-23 21:20:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:20:38,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 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 923 [2024-10-23 21:20:38,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:38,324 INFO L225 Difference]: With dead ends: 63920 [2024-10-23 21:20:38,324 INFO L226 Difference]: Without dead ends: 37794 [2024-10-23 21:20:38,341 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 [2024-10-23 21:20:38,342 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 618 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:38,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 226 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:20:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37794 states. [2024-10-23 21:20:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37794 to 28815. [2024-10-23 21:20:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28815 states, 28814 states have (on average 1.1124453390712847) internal successors, (32054), 28814 states have internal predecessors, (32054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28815 states to 28815 states and 32054 transitions. [2024-10-23 21:20:38,699 INFO L78 Accepts]: Start accepts. Automaton has 28815 states and 32054 transitions. Word has length 923 [2024-10-23 21:20:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:38,699 INFO L471 AbstractCegarLoop]: Abstraction has 28815 states and 32054 transitions. [2024-10-23 21:20:38,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 28815 states and 32054 transitions. [2024-10-23 21:20:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2024-10-23 21:20:38,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:38,724 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, 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, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:38,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:20:38,725 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:38,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -513815634, now seen corresponding path program 1 times [2024-10-23 21:20:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:38,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329082943] [2024-10-23 21:20:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1152 proven. 457 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-23 21:20:40,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:40,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329082943] [2024-10-23 21:20:40,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329082943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:40,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214657438] [2024-10-23 21:20:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:40,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:40,384 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) [2024-10-23 21:20:40,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:20:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:40,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:20:40,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1762 backedges. 1334 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-10-23 21:20:40,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:20:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214657438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:20:40,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:20:40,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-23 21:20:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365625258] [2024-10-23 21:20:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:20:40,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:20:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:20:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:40,896 INFO L87 Difference]: Start difference. First operand 28815 states and 32054 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:42,130 INFO L93 Difference]: Finished difference Result 57327 states and 63726 transitions. [2024-10-23 21:20:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:20:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 1002 [2024-10-23 21:20:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:42,159 INFO L225 Difference]: With dead ends: 57327 [2024-10-23 21:20:42,160 INFO L226 Difference]: Without dead ends: 28513 [2024-10-23 21:20:42,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:20:42,177 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 134 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:42,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 544 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:20:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28513 states. [2024-10-23 21:20:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28513 to 27915. [2024-10-23 21:20:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27915 states, 27914 states have (on average 1.0815719710539515) internal successors, (30191), 27914 states have internal predecessors, (30191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27915 states to 27915 states and 30191 transitions. [2024-10-23 21:20:42,411 INFO L78 Accepts]: Start accepts. Automaton has 27915 states and 30191 transitions. Word has length 1002 [2024-10-23 21:20:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:42,412 INFO L471 AbstractCegarLoop]: Abstraction has 27915 states and 30191 transitions. [2024-10-23 21:20:42,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27915 states and 30191 transitions. [2024-10-23 21:20:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2024-10-23 21:20:42,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:42,437 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:20:42,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 21:20:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:42,638 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 593636140, now seen corresponding path program 1 times [2024-10-23 21:20:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631831334] [2024-10-23 21:20:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 1296 proven. 41 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-10-23 21:20:43,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:20:43,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631831334] [2024-10-23 21:20:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631831334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:20:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929374026] [2024-10-23 21:20:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:43,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:43,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:20:43,966 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) [2024-10-23 21:20:43,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 21:20:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:20:44,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:20:44,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:20:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 793 proven. 46 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2024-10-23 21:20:44,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:20:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 793 proven. 46 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2024-10-23 21:20:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929374026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:20:45,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:20:45,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-10-23 21:20:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059319223] [2024-10-23 21:20:45,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:20:45,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-23 21:20:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:20:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-23 21:20:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-23 21:20:45,010 INFO L87 Difference]: Start difference. First operand 27915 states and 30191 transitions. Second operand has 10 states, 10 states have (on average 130.8) internal successors, (1308), 10 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:20:58,136 INFO L93 Difference]: Finished difference Result 62515 states and 67541 transitions. [2024-10-23 21:20:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-23 21:20:58,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 130.8) internal successors, (1308), 10 states have internal predecessors, (1308), 0 states have call successors, (0), 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 1031 [2024-10-23 21:20:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:20:58,175 INFO L225 Difference]: With dead ends: 62515 [2024-10-23 21:20:58,175 INFO L226 Difference]: Without dead ends: 34601 [2024-10-23 21:20:58,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2118 GetRequests, 2077 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2024-10-23 21:20:58,192 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 2591 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 23531 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 24443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 23531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:20:58,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2591 Valid, 537 Invalid, 24443 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [912 Valid, 23531 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-10-23 21:20:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34601 states. [2024-10-23 21:20:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34601 to 28509. [2024-10-23 21:20:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28509 states, 28508 states have (on average 1.0791006033394135) internal successors, (30763), 28508 states have internal predecessors, (30763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28509 states to 28509 states and 30763 transitions. [2024-10-23 21:20:58,531 INFO L78 Accepts]: Start accepts. Automaton has 28509 states and 30763 transitions. Word has length 1031 [2024-10-23 21:20:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:20:58,532 INFO L471 AbstractCegarLoop]: Abstraction has 28509 states and 30763 transitions. [2024-10-23 21:20:58,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 130.8) internal successors, (1308), 10 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:20:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28509 states and 30763 transitions. [2024-10-23 21:20:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2024-10-23 21:20:58,563 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:20:58,564 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, 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, 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, 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, 2, 2, 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] [2024-10-23 21:20:58,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 21:20:58,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:20:58,765 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:20:58,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:20:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash -70224097, now seen corresponding path program 1 times [2024-10-23 21:20:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:20:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746243771] [2024-10-23 21:20:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:20:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:20:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1484 proven. 336 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-10-23 21:21:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:21:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746243771] [2024-10-23 21:21:00,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746243771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:21:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970097930] [2024-10-23 21:21:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:21:00,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:21:00,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:21:00,698 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) [2024-10-23 21:21:00,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 21:21:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:21:01,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:21:01,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:21:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2024-10-23 21:21:01,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:21:01,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970097930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:21:01,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:21:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-23 21:21:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880741605] [2024-10-23 21:21:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:21:01,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:21:01,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:21:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:21:01,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:21:01,501 INFO L87 Difference]: Start difference. First operand 28509 states and 30763 transitions. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)