./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label56.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 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:24:15,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:24:15,698 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:24:15,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:24:15,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:24:15,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:24:15,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:24:15,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:24:15,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:24:15,736 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:24:15,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:24:15,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:24:15,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:24:15,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:24:15,739 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:24:15,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:24:15,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:24:15,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:24:15,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:24:15,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:24:15,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:24:15,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:24:15,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:24:15,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:24:15,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:24:15,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:24:15,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:24:15,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:24:15,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:24:15,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:24:15,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:24:15,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:24:15,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:24:15,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:24:15,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:24:15,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:24:15,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:24:15,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:24:15,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:24:15,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:24:15,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:24:15,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:24:15,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc [2024-11-08 11:24:16,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:24:16,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:24:16,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:24:16,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:24:16,117 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:24:16,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2024-11-08 11:24:17,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:24:18,009 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:24:18,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2024-11-08 11:24:18,046 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6b3097e/cae31f814b074e66afd4150f37c9b171/FLAGc054e8847 [2024-11-08 11:24:18,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee6b3097e/cae31f814b074e66afd4150f37c9b171 [2024-11-08 11:24:18,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:24:18,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:24:18,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:24:18,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:24:18,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:24:18,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:24:18" (1/1) ... [2024-11-08 11:24:18,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e915a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:18, skipping insertion in model container [2024-11-08 11:24:18,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:24:18" (1/1) ... [2024-11-08 11:24:18,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:24:18,488 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c[7559,7572] [2024-11-08 11:24:19,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:24:19,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:24:19,401 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c[7559,7572] [2024-11-08 11:24:19,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:24:19,935 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:24:19,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19 WrapperNode [2024-11-08 11:24:19,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:24:19,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:24:19,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:24:19,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:24:19,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,527 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-11-08 11:24:20,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:24:20,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:24:20,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:24:20,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:24:20,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,915 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 11:24:20,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:20,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:24:21,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:24:21,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:24:21,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:24:21,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (1/1) ... [2024-11-08 11:24:21,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:24:21,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:24:21,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 11:24:21,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 11:24:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:24:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:24:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:24:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:24:21,393 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:24:21,395 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:24:27,087 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 11:24:27,088 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:24:27,137 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:24:27,138 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:24:27,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:24:27 BoogieIcfgContainer [2024-11-08 11:24:27,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:24:27,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:24:27,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:24:27,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:24:27,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:24:18" (1/3) ... [2024-11-08 11:24:27,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460cdc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:24:27, skipping insertion in model container [2024-11-08 11:24:27,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:24:19" (2/3) ... [2024-11-08 11:24:27,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460cdc5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:24:27, skipping insertion in model container [2024-11-08 11:24:27,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:24:27" (3/3) ... [2024-11-08 11:24:27,148 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2024-11-08 11:24:27,165 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:24:27,165 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:24:27,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:24:27,265 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;@22c43312, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:24:27,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:24:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 11:24:27,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:27,289 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] [2024-11-08 11:24:27,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:27,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2024-11-08 11:24:27,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:27,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641676847] [2024-11-08 11:24:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:27,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:24:27,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641676847] [2024-11-08 11:24:27,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641676847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:24:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823813661] [2024-11-08 11:24:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:27,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:24:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:24:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:24:27,758 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:31,662 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2024-11-08 11:24:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:24:31,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-08 11:24:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:31,695 INFO L225 Difference]: With dead ends: 3035 [2024-11-08 11:24:31,696 INFO L226 Difference]: Without dead ends: 1873 [2024-11-08 11:24:31,706 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 [2024-11-08 11:24:31,711 INFO L432 NwaCegarLoop]: 991 mSDtfsCounter, 852 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:31,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 11:24:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-08 11:24:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2024-11-08 11:24:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2024-11-08 11:24:31,853 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 53 [2024-11-08 11:24:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:31,854 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2024-11-08 11:24:31,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2024-11-08 11:24:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 11:24:31,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:31,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:31,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:24:31,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:31,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -864385219, now seen corresponding path program 1 times [2024-11-08 11:24:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461919922] [2024-11-08 11:24:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:24:32,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461919922] [2024-11-08 11:24:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461919922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:24:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768989876] [2024-11-08 11:24:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:32,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:24:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:24:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:24:32,153 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:35,604 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2024-11-08 11:24:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:24:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-11-08 11:24:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:35,618 INFO L225 Difference]: With dead ends: 5317 [2024-11-08 11:24:35,619 INFO L226 Difference]: Without dead ends: 3460 [2024-11-08 11:24:35,622 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 [2024-11-08 11:24:35,623 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:35,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 11:24:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-11-08 11:24:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2024-11-08 11:24:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2024-11-08 11:24:35,685 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 125 [2024-11-08 11:24:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:35,685 INFO L471 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2024-11-08 11:24:35,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2024-11-08 11:24:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-08 11:24:35,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:35,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:35,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:24:35,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:35,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -799913370, now seen corresponding path program 1 times [2024-11-08 11:24:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391041568] [2024-11-08 11:24:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:24:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391041568] [2024-11-08 11:24:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391041568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:36,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:36,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:24:36,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277294806] [2024-11-08 11:24:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:36,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:24:36,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:24:36,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:24:36,177 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:40,694 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2024-11-08 11:24:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:24:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-08 11:24:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:40,720 INFO L225 Difference]: With dead ends: 10870 [2024-11-08 11:24:40,721 INFO L226 Difference]: Without dead ends: 7413 [2024-11-08 11:24:40,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:24:40,729 INFO L432 NwaCegarLoop]: 709 mSDtfsCounter, 2582 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:40,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1003 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 11:24:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2024-11-08 11:24:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2024-11-08 11:24:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2024-11-08 11:24:40,854 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 139 [2024-11-08 11:24:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:40,856 INFO L471 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2024-11-08 11:24:40,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2024-11-08 11:24:40,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-08 11:24:40,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:40,862 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:40,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:24:40,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:40,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 813209171, now seen corresponding path program 1 times [2024-11-08 11:24:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591487433] [2024-11-08 11:24:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 11:24:41,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591487433] [2024-11-08 11:24:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591487433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:41,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:24:41,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846205006] [2024-11-08 11:24:41,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:41,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:24:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:24:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:24:41,181 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:44,507 INFO L93 Difference]: Finished difference Result 20357 states and 26252 transitions. [2024-11-08 11:24:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:24:44,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 220 [2024-11-08 11:24:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:44,546 INFO L225 Difference]: With dead ends: 20357 [2024-11-08 11:24:44,547 INFO L226 Difference]: Without dead ends: 13734 [2024-11-08 11:24:44,561 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 [2024-11-08 11:24:44,562 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:44,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 980 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 11:24:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2024-11-08 11:24:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12937. [2024-11-08 11:24:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2024-11-08 11:24:44,874 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 220 [2024-11-08 11:24:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:44,876 INFO L471 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2024-11-08 11:24:44,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2024-11-08 11:24:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-08 11:24:44,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:44,880 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:44,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:24:44,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:44,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1061989469, now seen corresponding path program 1 times [2024-11-08 11:24:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839414694] [2024-11-08 11:24:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:24:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839414694] [2024-11-08 11:24:45,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839414694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:45,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:24:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428202588] [2024-11-08 11:24:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:45,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:24:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:24:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:24:45,128 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:48,191 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2024-11-08 11:24:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:24:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-11-08 11:24:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:48,231 INFO L225 Difference]: With dead ends: 31392 [2024-11-08 11:24:48,231 INFO L226 Difference]: Without dead ends: 19244 [2024-11-08 11:24:48,241 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 [2024-11-08 11:24:48,242 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:48,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 11:24:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2024-11-08 11:24:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2024-11-08 11:24:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2024-11-08 11:24:48,473 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 252 [2024-11-08 11:24:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:48,473 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2024-11-08 11:24:48,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2024-11-08 11:24:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-08 11:24:48,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:48,481 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:48,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:24:48,481 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:48,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1794467894, now seen corresponding path program 1 times [2024-11-08 11:24:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429401883] [2024-11-08 11:24:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-08 11:24:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429401883] [2024-11-08 11:24:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429401883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:48,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:24:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746461131] [2024-11-08 11:24:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:48,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:24:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:24:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:24:48,930 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:52,648 INFO L93 Difference]: Finished difference Result 52772 states and 63784 transitions. [2024-11-08 11:24:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:24:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 341 [2024-11-08 11:24:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:52,721 INFO L225 Difference]: With dead ends: 52772 [2024-11-08 11:24:52,722 INFO L226 Difference]: Without dead ends: 35114 [2024-11-08 11:24:52,746 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 [2024-11-08 11:24:52,749 INFO L432 NwaCegarLoop]: 1700 mSDtfsCounter, 920 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:52,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1819 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3128 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-08 11:24:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35114 states. [2024-11-08 11:24:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35114 to 34274. [2024-11-08 11:24:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34274 states, 34273 states have (on average 1.1858897674554314) internal successors, (40644), 34273 states have internal predecessors, (40644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34274 states to 34274 states and 40644 transitions. [2024-11-08 11:24:53,284 INFO L78 Accepts]: Start accepts. Automaton has 34274 states and 40644 transitions. Word has length 341 [2024-11-08 11:24:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:24:53,285 INFO L471 AbstractCegarLoop]: Abstraction has 34274 states and 40644 transitions. [2024-11-08 11:24:53,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 34274 states and 40644 transitions. [2024-11-08 11:24:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-08 11:24:53,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:24:53,298 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:24:53,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:24:53,298 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:24:53,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:24:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash 965426254, now seen corresponding path program 1 times [2024-11-08 11:24:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:24:53,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251921207] [2024-11-08 11:24:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:24:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:24:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:24:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-08 11:24:53,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:24:53,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251921207] [2024-11-08 11:24:53,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251921207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:24:53,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:24:53,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:24:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473212627] [2024-11-08 11:24:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:24:53,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:24:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:24:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:24:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:24:53,625 INFO L87 Difference]: Start difference. First operand 34274 states and 40644 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:24:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:24:59,614 INFO L93 Difference]: Finished difference Result 108144 states and 129355 transitions. [2024-11-08 11:24:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:24:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 341 [2024-11-08 11:24:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:24:59,728 INFO L225 Difference]: With dead ends: 108144 [2024-11-08 11:24:59,728 INFO L226 Difference]: Without dead ends: 74659 [2024-11-08 11:24:59,760 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 [2024-11-08 11:24:59,761 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 1737 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 6123 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 7270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 6123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:24:59,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 798 Invalid, 7270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1147 Valid, 6123 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 11:24:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74659 states. [2024-11-08 11:25:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74659 to 74498. [2024-11-08 11:25:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74498 states, 74497 states have (on average 1.170892787629032) internal successors, (87228), 74497 states have internal predecessors, (87228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74498 states to 74498 states and 87228 transitions. [2024-11-08 11:25:00,537 INFO L78 Accepts]: Start accepts. Automaton has 74498 states and 87228 transitions. Word has length 341 [2024-11-08 11:25:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:00,538 INFO L471 AbstractCegarLoop]: Abstraction has 74498 states and 87228 transitions. [2024-11-08 11:25:00,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 74498 states and 87228 transitions. [2024-11-08 11:25:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-08 11:25:00,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:00,549 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:00,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:25:00,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:00,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash -887572111, now seen corresponding path program 1 times [2024-11-08 11:25:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599277392] [2024-11-08 11:25:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-08 11:25:01,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:01,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599277392] [2024-11-08 11:25:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599277392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:01,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:01,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:25:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571732265] [2024-11-08 11:25:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:01,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:01,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:01,349 INFO L87 Difference]: Start difference. First operand 74498 states and 87228 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:04,873 INFO L93 Difference]: Finished difference Result 160036 states and 187018 transitions. [2024-11-08 11:25:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2024-11-08 11:25:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:04,976 INFO L225 Difference]: With dead ends: 160036 [2024-11-08 11:25:04,977 INFO L226 Difference]: Without dead ends: 86327 [2024-11-08 11:25:05,000 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 [2024-11-08 11:25:05,002 INFO L432 NwaCegarLoop]: 1021 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:05,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1202 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 11:25:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86327 states. [2024-11-08 11:25:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86327 to 86316. [2024-11-08 11:25:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86316 states, 86315 states have (on average 1.1568904593639575) internal successors, (99857), 86315 states have internal predecessors, (99857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86316 states to 86316 states and 99857 transitions. [2024-11-08 11:25:06,171 INFO L78 Accepts]: Start accepts. Automaton has 86316 states and 99857 transitions. Word has length 379 [2024-11-08 11:25:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:06,172 INFO L471 AbstractCegarLoop]: Abstraction has 86316 states and 99857 transitions. [2024-11-08 11:25:06,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 86316 states and 99857 transitions. [2024-11-08 11:25:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-08 11:25:06,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:06,399 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:06,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:25:06,400 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash -421298775, now seen corresponding path program 1 times [2024-11-08 11:25:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527155600] [2024-11-08 11:25:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 324 proven. 113 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-08 11:25:08,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527155600] [2024-11-08 11:25:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527155600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199037920] [2024-11-08 11:25:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:08,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:08,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:08,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:25:08,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:25:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:08,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:08,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-08 11:25:08,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199037920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:08,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:08,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-08 11:25:08,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825315776] [2024-11-08 11:25:08,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:08,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:08,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:25:08,546 INFO L87 Difference]: Start difference. First operand 86316 states and 99857 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:11,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:11,642 INFO L93 Difference]: Finished difference Result 174967 states and 202960 transitions. [2024-11-08 11:25:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 408 [2024-11-08 11:25:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:11,765 INFO L225 Difference]: With dead ends: 174967 [2024-11-08 11:25:11,765 INFO L226 Difference]: Without dead ends: 101258 [2024-11-08 11:25:11,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 11:25:11,820 INFO L432 NwaCegarLoop]: 1726 mSDtfsCounter, 873 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:11,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1856 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 11:25:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101258 states. [2024-11-08 11:25:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101258 to 91020. [2024-11-08 11:25:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91020 states, 91019 states have (on average 1.147705424142212) internal successors, (104463), 91019 states have internal predecessors, (104463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91020 states to 91020 states and 104463 transitions. [2024-11-08 11:25:13,371 INFO L78 Accepts]: Start accepts. Automaton has 91020 states and 104463 transitions. Word has length 408 [2024-11-08 11:25:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:13,371 INFO L471 AbstractCegarLoop]: Abstraction has 91020 states and 104463 transitions. [2024-11-08 11:25:13,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 91020 states and 104463 transitions. [2024-11-08 11:25:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-08 11:25:13,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:13,388 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:13,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:25:13,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:13,589 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash -105529957, now seen corresponding path program 1 times [2024-11-08 11:25:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:13,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758785512] [2024-11-08 11:25:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:13,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-08 11:25:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758785512] [2024-11-08 11:25:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758785512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:13,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:13,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113185280] [2024-11-08 11:25:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:13,926 INFO L87 Difference]: Start difference. First operand 91020 states and 104463 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:17,850 INFO L93 Difference]: Finished difference Result 210389 states and 244216 transitions. [2024-11-08 11:25:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:17,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 457 [2024-11-08 11:25:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:18,024 INFO L225 Difference]: With dead ends: 210389 [2024-11-08 11:25:18,025 INFO L226 Difference]: Without dead ends: 120158 [2024-11-08 11:25:18,071 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 [2024-11-08 11:25:18,072 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 939 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:18,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 946 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-08 11:25:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120158 states. [2024-11-08 11:25:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120158 to 117774. [2024-11-08 11:25:19,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117774 states, 117773 states have (on average 1.1534562251110188) internal successors, (135846), 117773 states have internal predecessors, (135846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117774 states to 117774 states and 135846 transitions. [2024-11-08 11:25:19,728 INFO L78 Accepts]: Start accepts. Automaton has 117774 states and 135846 transitions. Word has length 457 [2024-11-08 11:25:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:19,729 INFO L471 AbstractCegarLoop]: Abstraction has 117774 states and 135846 transitions. [2024-11-08 11:25:19,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 117774 states and 135846 transitions. [2024-11-08 11:25:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-08 11:25:19,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:19,740 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:25:19,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:25:19,740 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:19,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash 251174794, now seen corresponding path program 1 times [2024-11-08 11:25:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:19,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168830860] [2024-11-08 11:25:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 342 proven. 110 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-08 11:25:21,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:21,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168830860] [2024-11-08 11:25:21,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168830860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:21,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717511769] [2024-11-08 11:25:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:21,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:21,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:21,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:25:21,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:25:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:21,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:21,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 11:25:21,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:21,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717511769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:21,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:25:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926859760] [2024-11-08 11:25:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:21,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:25:21,999 INFO L87 Difference]: Start difference. First operand 117774 states and 135846 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:25,504 INFO L93 Difference]: Finished difference Result 230789 states and 269473 transitions. [2024-11-08 11:25:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 483 [2024-11-08 11:25:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:25,874 INFO L225 Difference]: With dead ends: 230789 [2024-11-08 11:25:25,877 INFO L226 Difference]: Without dead ends: 129553 [2024-11-08 11:25:25,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:25:25,958 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 1136 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:25,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 410 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 11:25:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129553 states. [2024-11-08 11:25:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129553 to 129551. [2024-11-08 11:25:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129551 states, 129550 states have (on average 1.149733693554612) internal successors, (148948), 129550 states have internal predecessors, (148948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129551 states to 129551 states and 148948 transitions. [2024-11-08 11:25:27,272 INFO L78 Accepts]: Start accepts. Automaton has 129551 states and 148948 transitions. Word has length 483 [2024-11-08 11:25:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:27,272 INFO L471 AbstractCegarLoop]: Abstraction has 129551 states and 148948 transitions. [2024-11-08 11:25:27,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 129551 states and 148948 transitions. [2024-11-08 11:25:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-08 11:25:27,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:27,281 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:25:27,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:25:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 11:25:27,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:27,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 846949728, now seen corresponding path program 1 times [2024-11-08 11:25:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545456624] [2024-11-08 11:25:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-08 11:25:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545456624] [2024-11-08 11:25:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545456624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141913609] [2024-11-08 11:25:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:28,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:28,301 INFO L87 Difference]: Start difference. First operand 129551 states and 148948 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:25:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:31,805 INFO L93 Difference]: Finished difference Result 260678 states and 299490 transitions. [2024-11-08 11:25:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 498 [2024-11-08 11:25:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:31,986 INFO L225 Difference]: With dead ends: 260678 [2024-11-08 11:25:31,986 INFO L226 Difference]: Without dead ends: 131916 [2024-11-08 11:25:32,068 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 [2024-11-08 11:25:32,069 INFO L432 NwaCegarLoop]: 1367 mSDtfsCounter, 847 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:32,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1453 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 11:25:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131916 states.