./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/Problem03_label27.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/Problem03_label27.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 497301b92ba25c2f1607465beb3fb2acf88756e6c4b878ac8a9bf2f715106635 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:21:19,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:21:19,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:21:19,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:21:19,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:21:19,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:21:19,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:21:19,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:21:19,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:21:19,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:21:19,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:21:19,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:21:19,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:21:19,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:21:19,515 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:21:19,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:21:19,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:21:19,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:21:19,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:21:19,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:21:19,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:21:19,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:21:19,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:21:19,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:21:19,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:21:19,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:21:19,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:21:19,520 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:21:19,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:21:19,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:21:19,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:21:19,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:21:19,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:21:19,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:21:19,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:21:19,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:21:19,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:21:19,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:21:19,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:21:19,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:21:19,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:21:19,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:21:19,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 497301b92ba25c2f1607465beb3fb2acf88756e6c4b878ac8a9bf2f715106635 [2024-10-23 20:21:19,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:21:19,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:21:19,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:21:19,813 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:21:19,814 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:21:19,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label27.c [2024-10-23 20:21:21,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:21:21,591 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:21:21,592 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label27.c [2024-10-23 20:21:21,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75fd4f207/a93749520f914af789f56251273387b8/FLAGada6e5ea6 [2024-10-23 20:21:21,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75fd4f207/a93749520f914af789f56251273387b8 [2024-10-23 20:21:21,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:21:21,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:21:21,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:21:21,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:21:21,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:21:21,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:21" (1/1) ... [2024-10-23 20:21:21,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e726ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:21, skipping insertion in model container [2024-10-23 20:21:21,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:21:21" (1/1) ... [2024-10-23 20:21:21,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:21:22,296 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/Problem03_label27.c[54867,54880] [2024-10-23 20:21:22,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:21:22,358 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:21:22,510 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/Problem03_label27.c[54867,54880] [2024-10-23 20:21:22,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:21:22,552 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:21:22,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22 WrapperNode [2024-10-23 20:21:22,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:21:22,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:21:22,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:21:22,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:21:22,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,687 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-23 20:21:22,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:21:22,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:21:22,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:21:22,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:21:22,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,750 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 20:21:22,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:21:22,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:21:22,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:21:22,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:21:22,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (1/1) ... [2024-10-23 20:21:22,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:21:22,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:22,894 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 20:21:22,897 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 20:21:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:21:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:21:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:21:22,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:21:23,025 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:21:23,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:21:24,858 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-23 20:21:24,859 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:21:24,929 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:21:24,929 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:21:24,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:24 BoogieIcfgContainer [2024-10-23 20:21:24,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:21:24,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:21:24,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:21:24,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:21:24,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:21:21" (1/3) ... [2024-10-23 20:21:24,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6795eacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:24, skipping insertion in model container [2024-10-23 20:21:24,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:21:22" (2/3) ... [2024-10-23 20:21:24,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6795eacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:21:24, skipping insertion in model container [2024-10-23 20:21:24,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:21:24" (3/3) ... [2024-10-23 20:21:24,941 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label27.c [2024-10-23 20:21:24,958 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:21:24,958 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:21:25,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:21:25,039 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;@4eb6cabb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:21:25,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:21:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 20:21:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-23 20:21:25,060 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:25,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:25,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:25,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1686602558, now seen corresponding path program 1 times [2024-10-23 20:21:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578043239] [2024-10-23 20:21:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:25,649 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 20:21:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:25,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578043239] [2024-10-23 20:21:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578043239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566924115] [2024-10-23 20:21:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:25,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:21:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:25,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:21:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:21:25,692 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 76.0) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 20:21:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:25,740 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-23 20:21:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:21:25,743 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-10-23 20:21:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:25,756 INFO L225 Difference]: With dead ends: 479 [2024-10-23 20:21:25,757 INFO L226 Difference]: Without dead ends: 238 [2024-10-23 20:21:25,760 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 20:21:25,763 INFO L432 NwaCegarLoop]: 392 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, 392 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 20:21:25,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:21:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-23 20:21:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-23 20:21:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 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 20:21:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-23 20:21:25,809 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 152 [2024-10-23 20:21:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:25,810 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-23 20:21:25,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 20:21:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-23 20:21:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-23 20:21:25,814 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:25,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:25,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:21:25,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:25,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 480697502, now seen corresponding path program 1 times [2024-10-23 20:21:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138169845] [2024-10-23 20:21:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:26,464 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 20:21:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138169845] [2024-10-23 20:21:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138169845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:26,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:26,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859546691] [2024-10-23 20:21:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:26,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:26,473 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 20:21:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:27,505 INFO L93 Difference]: Finished difference Result 699 states and 1161 transitions. [2024-10-23 20:21:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-10-23 20:21:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:27,514 INFO L225 Difference]: With dead ends: 699 [2024-10-23 20:21:27,514 INFO L226 Difference]: Without dead ends: 462 [2024-10-23 20:21:27,515 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 20:21:27,517 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 88 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:27,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 83 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:21:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-10-23 20:21:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2024-10-23 20:21:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6353467561521253) internal successors, (731), 447 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 20:21:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 731 transitions. [2024-10-23 20:21:27,546 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 731 transitions. Word has length 152 [2024-10-23 20:21:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:27,547 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 731 transitions. [2024-10-23 20:21:27,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 20:21:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 731 transitions. [2024-10-23 20:21:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-23 20:21:27,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:27,551 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:27,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:21:27,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:27,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1910749778, now seen corresponding path program 1 times [2024-10-23 20:21:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:27,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244164586] [2024-10-23 20:21:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:27,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:27,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:27,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244164586] [2024-10-23 20:21:27,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244164586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:27,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:27,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464347245] [2024-10-23 20:21:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:27,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:27,854 INFO L87 Difference]: Start difference. First operand 448 states and 731 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 20:21:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:28,543 INFO L93 Difference]: Finished difference Result 1332 states and 2179 transitions. [2024-10-23 20:21:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-10-23 20:21:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:28,547 INFO L225 Difference]: With dead ends: 1332 [2024-10-23 20:21:28,547 INFO L226 Difference]: Without dead ends: 885 [2024-10-23 20:21:28,549 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 20:21:28,550 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:28,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 112 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:21:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-23 20:21:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2024-10-23 20:21:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.6170454545454545) internal successors, (1423), 880 states have internal predecessors, (1423), 0 states have call successors, (0), 0 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 20:21:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1423 transitions. [2024-10-23 20:21:28,584 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1423 transitions. Word has length 158 [2024-10-23 20:21:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:28,585 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1423 transitions. [2024-10-23 20:21:28,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 20:21:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1423 transitions. [2024-10-23 20:21:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-23 20:21:28,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:28,589 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:21:28,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:28,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 740058490, now seen corresponding path program 1 times [2024-10-23 20:21:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68226819] [2024-10-23 20:21:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:28,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68226819] [2024-10-23 20:21:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68226819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612746076] [2024-10-23 20:21:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:28,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:28,773 INFO L87 Difference]: Start difference. First operand 881 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 20:21:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:29,609 INFO L93 Difference]: Finished difference Result 2580 states and 4180 transitions. [2024-10-23 20:21:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-10-23 20:21:29,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:29,616 INFO L225 Difference]: With dead ends: 2580 [2024-10-23 20:21:29,616 INFO L226 Difference]: Without dead ends: 1700 [2024-10-23 20:21:29,618 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 20:21:29,622 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 241 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:29,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 164 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:21:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2024-10-23 20:21:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1697. [2024-10-23 20:21:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 1.4439858490566038) internal successors, (2449), 1696 states have internal predecessors, (2449), 0 states have call successors, (0), 0 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 20:21:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2449 transitions. [2024-10-23 20:21:29,657 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2449 transitions. Word has length 158 [2024-10-23 20:21:29,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:29,658 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2449 transitions. [2024-10-23 20:21:29,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 20:21:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2449 transitions. [2024-10-23 20:21:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-23 20:21:29,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:29,661 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:29,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:21:29,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:29,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1722204092, now seen corresponding path program 1 times [2024-10-23 20:21:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043796654] [2024-10-23 20:21:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043796654] [2024-10-23 20:21:29,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043796654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:29,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:29,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282715991] [2024-10-23 20:21:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:29,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:29,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:29,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:29,950 INFO L87 Difference]: Start difference. First operand 1697 states and 2449 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 20:21:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:30,801 INFO L93 Difference]: Finished difference Result 5037 states and 7271 transitions. [2024-10-23 20:21:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-10-23 20:21:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:30,813 INFO L225 Difference]: With dead ends: 5037 [2024-10-23 20:21:30,814 INFO L226 Difference]: Without dead ends: 3341 [2024-10-23 20:21:30,817 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 20:21:30,818 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:30,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 112 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 20:21:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2024-10-23 20:21:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3339. [2024-10-23 20:21:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3338 states have (on average 1.3693828639904133) internal successors, (4571), 3338 states have internal predecessors, (4571), 0 states have call successors, (0), 0 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 20:21:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4571 transitions. [2024-10-23 20:21:30,890 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4571 transitions. Word has length 162 [2024-10-23 20:21:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:30,890 INFO L471 AbstractCegarLoop]: Abstraction has 3339 states and 4571 transitions. [2024-10-23 20:21:30,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 20:21:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4571 transitions. [2024-10-23 20:21:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-23 20:21:30,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:30,896 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:21:30,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:21:30,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:30,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1154328489, now seen corresponding path program 1 times [2024-10-23 20:21:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187789430] [2024-10-23 20:21:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187789430] [2024-10-23 20:21:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187789430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:31,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:31,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693446420] [2024-10-23 20:21:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:31,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:31,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:31,147 INFO L87 Difference]: Start difference. First operand 3339 states and 4571 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 20:21:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:31,920 INFO L93 Difference]: Finished difference Result 9982 states and 13674 transitions. [2024-10-23 20:21:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2024-10-23 20:21:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:31,947 INFO L225 Difference]: With dead ends: 9982 [2024-10-23 20:21:31,947 INFO L226 Difference]: Without dead ends: 6644 [2024-10-23 20:21:31,954 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 20:21:31,955 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:31,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 99 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:21:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6644 states. [2024-10-23 20:21:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 6633. [2024-10-23 20:21:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 6632 states have (on average 1.3541917973462003) internal successors, (8981), 6632 states have internal predecessors, (8981), 0 states have call successors, (0), 0 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 20:21:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 8981 transitions. [2024-10-23 20:21:32,084 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 8981 transitions. Word has length 164 [2024-10-23 20:21:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:32,085 INFO L471 AbstractCegarLoop]: Abstraction has 6633 states and 8981 transitions. [2024-10-23 20:21:32,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 20:21:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 8981 transitions. [2024-10-23 20:21:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-23 20:21:32,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:32,095 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-23 20:21:32,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:21:32,095 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:32,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash 681389139, now seen corresponding path program 1 times [2024-10-23 20:21:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794726136] [2024-10-23 20:21:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794726136] [2024-10-23 20:21:32,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794726136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:32,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:32,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757351265] [2024-10-23 20:21:32,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:32,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:32,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:32,405 INFO L87 Difference]: Start difference. First operand 6633 states and 8981 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 20:21:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:33,100 INFO L93 Difference]: Finished difference Result 16515 states and 21801 transitions. [2024-10-23 20:21:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:33,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 169 [2024-10-23 20:21:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:33,126 INFO L225 Difference]: With dead ends: 16515 [2024-10-23 20:21:33,127 INFO L226 Difference]: Without dead ends: 9883 [2024-10-23 20:21:33,137 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 20:21:33,137 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 210 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:33,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 185 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:33,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2024-10-23 20:21:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 9881. [2024-10-23 20:21:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9881 states, 9880 states have (on average 1.2818825910931173) internal successors, (12665), 9880 states have internal predecessors, (12665), 0 states have call successors, (0), 0 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 20:21:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9881 states to 9881 states and 12665 transitions. [2024-10-23 20:21:33,325 INFO L78 Accepts]: Start accepts. Automaton has 9881 states and 12665 transitions. Word has length 169 [2024-10-23 20:21:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:33,325 INFO L471 AbstractCegarLoop]: Abstraction has 9881 states and 12665 transitions. [2024-10-23 20:21:33,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 20:21:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9881 states and 12665 transitions. [2024-10-23 20:21:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-23 20:21:33,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:33,333 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-10-23 20:21:33,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:21:33,334 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:33,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1498502215, now seen corresponding path program 1 times [2024-10-23 20:21:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974210484] [2024-10-23 20:21:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:33,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974210484] [2024-10-23 20:21:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974210484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538830208] [2024-10-23 20:21:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:33,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:21:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:21:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:33,578 INFO L87 Difference]: Start difference. First operand 9881 states and 12665 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 20:21:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:35,125 INFO L93 Difference]: Finished difference Result 39374 states and 50454 transitions. [2024-10-23 20:21:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:21:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 179 [2024-10-23 20:21:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:35,201 INFO L225 Difference]: With dead ends: 39374 [2024-10-23 20:21:35,201 INFO L226 Difference]: Without dead ends: 29494 [2024-10-23 20:21:35,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:35,222 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 560 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:35,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 119 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 20:21:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29494 states. [2024-10-23 20:21:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29494 to 26229. [2024-10-23 20:21:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26229 states, 26228 states have (on average 1.2795485740430075) internal successors, (33560), 26228 states have internal predecessors, (33560), 0 states have call successors, (0), 0 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 20:21:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26229 states to 26229 states and 33560 transitions. [2024-10-23 20:21:35,756 INFO L78 Accepts]: Start accepts. Automaton has 26229 states and 33560 transitions. Word has length 179 [2024-10-23 20:21:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:35,756 INFO L471 AbstractCegarLoop]: Abstraction has 26229 states and 33560 transitions. [2024-10-23 20:21:35,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 20:21:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 26229 states and 33560 transitions. [2024-10-23 20:21:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-23 20:21:35,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:35,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:35,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 20:21:35,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:35,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2083378552, now seen corresponding path program 1 times [2024-10-23 20:21:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061119727] [2024-10-23 20:21:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061119727] [2024-10-23 20:21:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061119727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:36,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:36,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103902734] [2024-10-23 20:21:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:36,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:36,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:36,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:36,061 INFO L87 Difference]: Start difference. First operand 26229 states and 33560 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 20:21:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:37,179 INFO L93 Difference]: Finished difference Result 75946 states and 97082 transitions. [2024-10-23 20:21:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:37,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2024-10-23 20:21:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:37,290 INFO L225 Difference]: With dead ends: 75946 [2024-10-23 20:21:37,291 INFO L226 Difference]: Without dead ends: 49718 [2024-10-23 20:21:37,322 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 20:21:37,322 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 222 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:37,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 143 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 20:21:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49718 states. [2024-10-23 20:21:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49718 to 46862. [2024-10-23 20:21:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46862 states, 46861 states have (on average 1.271355711572523) internal successors, (59577), 46861 states have internal predecessors, (59577), 0 states have call successors, (0), 0 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 20:21:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46862 states to 46862 states and 59577 transitions. [2024-10-23 20:21:38,126 INFO L78 Accepts]: Start accepts. Automaton has 46862 states and 59577 transitions. Word has length 180 [2024-10-23 20:21:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:38,126 INFO L471 AbstractCegarLoop]: Abstraction has 46862 states and 59577 transitions. [2024-10-23 20:21:38,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 20:21:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand 46862 states and 59577 transitions. [2024-10-23 20:21:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-23 20:21:38,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:38,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:38,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 20:21:38,136 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:38,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -6984707, now seen corresponding path program 1 times [2024-10-23 20:21:38,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:38,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137949456] [2024-10-23 20:21:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137949456] [2024-10-23 20:21:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137949456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660337526] [2024-10-23 20:21:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:38,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:38,777 INFO L87 Difference]: Start difference. First operand 46862 states and 59577 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 20:21:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:39,737 INFO L93 Difference]: Finished difference Result 116177 states and 147960 transitions. [2024-10-23 20:21:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2024-10-23 20:21:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:39,851 INFO L225 Difference]: With dead ends: 116177 [2024-10-23 20:21:39,851 INFO L226 Difference]: Without dead ends: 69316 [2024-10-23 20:21:39,893 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 20:21:39,894 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:39,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 118 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69316 states. [2024-10-23 20:21:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69316 to 69229. [2024-10-23 20:21:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69229 states, 69228 states have (on average 1.2706274917663374) internal successors, (87963), 69228 states have internal predecessors, (87963), 0 states have call successors, (0), 0 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 20:21:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69229 states to 69229 states and 87963 transitions. [2024-10-23 20:21:41,174 INFO L78 Accepts]: Start accepts. Automaton has 69229 states and 87963 transitions. Word has length 182 [2024-10-23 20:21:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:41,175 INFO L471 AbstractCegarLoop]: Abstraction has 69229 states and 87963 transitions. [2024-10-23 20:21:41,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 20:21:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 69229 states and 87963 transitions. [2024-10-23 20:21:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-23 20:21:41,190 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:41,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:41,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 20:21:41,192 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:41,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1804186887, now seen corresponding path program 1 times [2024-10-23 20:21:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645679749] [2024-10-23 20:21:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:41,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:41,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:41,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645679749] [2024-10-23 20:21:41,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645679749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:41,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:41,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738741405] [2024-10-23 20:21:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:41,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:41,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:41,650 INFO L87 Difference]: Start difference. First operand 69229 states and 87963 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 20:21:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:42,705 INFO L93 Difference]: Finished difference Result 140490 states and 178199 transitions. [2024-10-23 20:21:42,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2024-10-23 20:21:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:42,793 INFO L225 Difference]: With dead ends: 140490 [2024-10-23 20:21:42,793 INFO L226 Difference]: Without dead ends: 71262 [2024-10-23 20:21:42,844 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 20:21:42,845 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 182 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:42,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 188 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71262 states. [2024-10-23 20:21:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71262 to 71259. [2024-10-23 20:21:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71259 states, 71258 states have (on average 1.2661736226107945) internal successors, (90225), 71258 states have internal predecessors, (90225), 0 states have call successors, (0), 0 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 20:21:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71259 states to 71259 states and 90225 transitions. [2024-10-23 20:21:44,039 INFO L78 Accepts]: Start accepts. Automaton has 71259 states and 90225 transitions. Word has length 186 [2024-10-23 20:21:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:44,040 INFO L471 AbstractCegarLoop]: Abstraction has 71259 states and 90225 transitions. [2024-10-23 20:21:44,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 20:21:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 71259 states and 90225 transitions. [2024-10-23 20:21:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-23 20:21:44,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:44,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:21:44,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 20:21:44,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:44,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -3507257, now seen corresponding path program 1 times [2024-10-23 20:21:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516687720] [2024-10-23 20:21:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516687720] [2024-10-23 20:21:44,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516687720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:21:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707959209] [2024-10-23 20:21:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:21:44,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:21:44,610 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 20:21:44,612 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 20:21:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:44,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:21:44,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:21:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:45,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:21:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707959209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:45,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:21:45,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:21:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888893950] [2024-10-23 20:21:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:45,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:45,026 INFO L87 Difference]: Start difference. First operand 71259 states and 90225 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 20:21:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:46,133 INFO L93 Difference]: Finished difference Result 173815 states and 219397 transitions. [2024-10-23 20:21:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 187 [2024-10-23 20:21:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:46,272 INFO L225 Difference]: With dead ends: 173815 [2024-10-23 20:21:46,272 INFO L226 Difference]: Without dead ends: 103369 [2024-10-23 20:21:46,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:21:46,338 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 116 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:46,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 382 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103369 states. [2024-10-23 20:21:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103369 to 82412. [2024-10-23 20:21:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82412 states, 82411 states have (on average 1.221378214073364) internal successors, (100655), 82411 states have internal predecessors, (100655), 0 states have call successors, (0), 0 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 20:21:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82412 states to 82412 states and 100655 transitions. [2024-10-23 20:21:47,883 INFO L78 Accepts]: Start accepts. Automaton has 82412 states and 100655 transitions. Word has length 187 [2024-10-23 20:21:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:47,883 INFO L471 AbstractCegarLoop]: Abstraction has 82412 states and 100655 transitions. [2024-10-23 20:21:47,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 20:21:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 82412 states and 100655 transitions. [2024-10-23 20:21:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-23 20:21:47,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:47,894 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:21:47,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 20:21:48,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 20:21:48,095 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:48,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash 673795351, now seen corresponding path program 1 times [2024-10-23 20:21:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486799939] [2024-10-23 20:21:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 20:21:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486799939] [2024-10-23 20:21:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486799939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633724881] [2024-10-23 20:21:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:48,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:48,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:48,383 INFO L87 Difference]: Start difference. First operand 82412 states and 100655 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 20:21:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:49,797 INFO L93 Difference]: Finished difference Result 199232 states and 242313 transitions. [2024-10-23 20:21:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2024-10-23 20:21:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:49,937 INFO L225 Difference]: With dead ends: 199232 [2024-10-23 20:21:49,937 INFO L226 Difference]: Without dead ends: 117633 [2024-10-23 20:21:49,984 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 20:21:49,985 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 194 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:49,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 412 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:21:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117633 states. [2024-10-23 20:21:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117633 to 101285. [2024-10-23 20:21:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101285 states, 101284 states have (on average 1.1880257493779867) internal successors, (120328), 101284 states have internal predecessors, (120328), 0 states have call successors, (0), 0 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 20:21:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101285 states to 101285 states and 120328 transitions. [2024-10-23 20:21:51,737 INFO L78 Accepts]: Start accepts. Automaton has 101285 states and 120328 transitions. Word has length 201 [2024-10-23 20:21:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:51,737 INFO L471 AbstractCegarLoop]: Abstraction has 101285 states and 120328 transitions. [2024-10-23 20:21:51,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 20:21:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 101285 states and 120328 transitions. [2024-10-23 20:21:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-10-23 20:21:51,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:51,753 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, 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] [2024-10-23 20:21:51,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 20:21:51,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:51,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1240448064, now seen corresponding path program 1 times [2024-10-23 20:21:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863705569] [2024-10-23 20:21:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:52,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:52,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863705569] [2024-10-23 20:21:52,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863705569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:21:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395524248] [2024-10-23 20:21:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:52,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:21:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:52,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:21:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:21:52,527 INFO L87 Difference]: Start difference. First operand 101285 states and 120328 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:54,165 INFO L93 Difference]: Finished difference Result 266783 states and 318029 transitions. [2024-10-23 20:21:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:21:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-10-23 20:21:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:54,386 INFO L225 Difference]: With dead ends: 266783 [2024-10-23 20:21:54,386 INFO L226 Difference]: Without dead ends: 165702 [2024-10-23 20:21:54,412 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 20:21:54,413 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 237 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:54,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 206 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 20:21:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165702 states. [2024-10-23 20:21:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165702 to 157306. [2024-10-23 20:21:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157306 states, 157305 states have (on average 1.1949779091573693) internal successors, (187976), 157305 states have internal predecessors, (187976), 0 states have call successors, (0), 0 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 20:21:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157306 states to 157306 states and 187976 transitions. [2024-10-23 20:21:56,886 INFO L78 Accepts]: Start accepts. Automaton has 157306 states and 187976 transitions. Word has length 206 [2024-10-23 20:21:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:21:56,886 INFO L471 AbstractCegarLoop]: Abstraction has 157306 states and 187976 transitions. [2024-10-23 20:21:56,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:21:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 157306 states and 187976 transitions. [2024-10-23 20:21:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-23 20:21:56,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:21:56,900 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, 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] [2024-10-23 20:21:56,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 20:21:56,900 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:21:56,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:21:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 715577970, now seen corresponding path program 1 times [2024-10-23 20:21:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:21:56,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190876185] [2024-10-23 20:21:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:21:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:21:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:21:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:21:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:21:57,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190876185] [2024-10-23 20:21:57,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190876185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:21:57,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:21:57,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:21:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628271465] [2024-10-23 20:21:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:21:57,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:21:57,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:21:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:21:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:57,339 INFO L87 Difference]: Start difference. First operand 157306 states and 187976 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 20:21:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:21:59,646 INFO L93 Difference]: Finished difference Result 337930 states and 405660 transitions. [2024-10-23 20:21:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:21:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 20:21:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:21:59,905 INFO L225 Difference]: With dead ends: 337930 [2024-10-23 20:21:59,906 INFO L226 Difference]: Without dead ends: 183061 [2024-10-23 20:21:59,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:21:59,999 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 428 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:21:59,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 163 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:22:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183061 states. [2024-10-23 20:22:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183061 to 164614. [2024-10-23 20:22:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164614 states, 164613 states have (on average 1.208246007301975) internal successors, (198893), 164613 states have internal predecessors, (198893), 0 states have call successors, (0), 0 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 20:22:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164614 states to 164614 states and 198893 transitions. [2024-10-23 20:22:02,587 INFO L78 Accepts]: Start accepts. Automaton has 164614 states and 198893 transitions. Word has length 217 [2024-10-23 20:22:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:02,587 INFO L471 AbstractCegarLoop]: Abstraction has 164614 states and 198893 transitions. [2024-10-23 20:22:02,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 20:22:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 164614 states and 198893 transitions. [2024-10-23 20:22:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-10-23 20:22:02,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:02,600 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:22:02,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 20:22:02,600 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:02,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1835513469, now seen corresponding path program 1 times [2024-10-23 20:22:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:02,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439538881] [2024-10-23 20:22:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-23 20:22:03,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439538881] [2024-10-23 20:22:03,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439538881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:22:03,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866754389] [2024-10-23 20:22:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:03,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:03,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:03,399 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 20:22:03,409 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 20:22:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:03,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:22:03,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:22:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 20:22:03,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:22:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866754389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:03,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:22:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:22:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460391896] [2024-10-23 20:22:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:03,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:03,870 INFO L87 Difference]: Start difference. First operand 164614 states and 198893 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 20:22:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:05,574 INFO L93 Difference]: Finished difference Result 373328 states and 453849 transitions. [2024-10-23 20:22:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 224 [2024-10-23 20:22:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:06,567 INFO L225 Difference]: With dead ends: 373328 [2024-10-23 20:22:06,568 INFO L226 Difference]: Without dead ends: 211760 [2024-10-23 20:22:06,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:06,667 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 91 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:06,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 172 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:22:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211760 states. [2024-10-23 20:22:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211760 to 191633. [2024-10-23 20:22:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191633 states, 191632 states have (on average 1.2211686983384822) internal successors, (234015), 191632 states have internal predecessors, (234015), 0 states have call successors, (0), 0 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 20:22:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191633 states to 191633 states and 234015 transitions. [2024-10-23 20:22:09,534 INFO L78 Accepts]: Start accepts. Automaton has 191633 states and 234015 transitions. Word has length 224 [2024-10-23 20:22:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 191633 states and 234015 transitions. [2024-10-23 20:22:09,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 20:22:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 191633 states and 234015 transitions. [2024-10-23 20:22:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-10-23 20:22:09,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:09,550 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:22:09,564 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 20:22:09,751 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,SelfDestructingSolverStorable15 [2024-10-23 20:22:09,751 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:09,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash -985628968, now seen corresponding path program 1 times [2024-10-23 20:22:09,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731883375] [2024-10-23 20:22:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:22:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731883375] [2024-10-23 20:22:10,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731883375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:22:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584217500] [2024-10-23 20:22:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:10,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:22:10,079 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 20:22:10,080 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 20:22:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:10,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:22:10,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:22:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-23 20:22:10,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:22:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584217500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:10,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:22:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-23 20:22:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255918191] [2024-10-23 20:22:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:10,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:22:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:22:10,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:10,473 INFO L87 Difference]: Start difference. First operand 191633 states and 234015 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 20:22:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:12,601 INFO L93 Difference]: Finished difference Result 420034 states and 508418 transitions. [2024-10-23 20:22:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:22:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 254 [2024-10-23 20:22:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:12,956 INFO L225 Difference]: With dead ends: 420034 [2024-10-23 20:22:12,956 INFO L226 Difference]: Without dead ends: 231244 [2024-10-23 20:22:13,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:22:13,734 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 123 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:13,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 94 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:22:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231244 states. [2024-10-23 20:22:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231244 to 225534. [2024-10-23 20:22:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225534 states, 225533 states have (on average 1.1947519875140222) internal successors, (269456), 225533 states have internal predecessors, (269456), 0 states have call successors, (0), 0 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 20:22:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225534 states to 225534 states and 269456 transitions. [2024-10-23 20:22:16,806 INFO L78 Accepts]: Start accepts. Automaton has 225534 states and 269456 transitions. Word has length 254 [2024-10-23 20:22:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:22:16,806 INFO L471 AbstractCegarLoop]: Abstraction has 225534 states and 269456 transitions. [2024-10-23 20:22:16,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 20:22:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 225534 states and 269456 transitions. [2024-10-23 20:22:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-10-23 20:22:16,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:22:16,826 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 20:22:16,841 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 20:22:17,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:22:17,027 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:22:17,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:22:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1628176043, now seen corresponding path program 1 times [2024-10-23 20:22:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:22:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315295572] [2024-10-23 20:22:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:22:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:22:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:22:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-23 20:22:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:22:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315295572] [2024-10-23 20:22:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315295572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:22:17,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:22:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:22:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240006330] [2024-10-23 20:22:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:22:17,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:22:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:22:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:22:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:22:17,911 INFO L87 Difference]: Start difference. First operand 225534 states and 269456 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 20:22:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:22:20,643 INFO L93 Difference]: Finished difference Result 463176 states and 553013 transitions. [2024-10-23 20:22:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:22:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 278 [2024-10-23 20:22:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:22:21,027 INFO L225 Difference]: With dead ends: 463176 [2024-10-23 20:22:21,027 INFO L226 Difference]: Without dead ends: 232162 [2024-10-23 20:22:21,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:22:21,178 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 349 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:22:21,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 201 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 20:22:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232162 states.